Name: Aramid Gland Packing - Al-Hamd Traders
Price: 12300 PKR
Availability: InStock

Overview

Aramid gland packing is braided from high-tenacity aramid fibre (the same fibre family as Kevlar®) and impregnated with PTFE and lubricant. It exists to solve one specific problem: abrasive wear. Where a pump handles slurry, pulp, cane juice, mineral fines or grit, ordinary cotton, jute or PTFE packing wears out in weeks. Aramid resists that abrasion and extrusion far better than any conventional yarn, which is why it is the standard packing for mining, dredging, sugar-mill and pulp service.

What aramid is not is a high-temperature packing. Its ceiling is around 250–260°C — far below graphite packing. Choosing aramid for a steam application is a common and expensive mistake. Choose it when the dominant threat is particulate wear, not heat.

One property of aramid deserves flagging before you order: it is a hard, tough fibre, and on a soft or worn shaft it can act abrasively against the shaft itself. Datasheets typically recommend a minimum shaft hardness (around 60 HRC) or a hardened sleeve. For this reason aramid is very often used as end rings only — two aramid rings at the high-extrusion ends of the stuffing box, with a softer PTFE or graphite core in between. That combination gets the extrusion resistance where it is needed without running hard fibre against the whole shaft.

Specifications

Typical properties for PTFE-impregnated aramid packing. Exact limits vary by grade and by whether the packing is used in a rotary, reciprocating or valve application — confirm against your duty.

Property	Value	Test Standard
Material	High-tenacity aramid fibre, braided	—
Impregnation	PTFE dispersion + lubricant	—
Construction	Interlock / square braid	—
Colour	Yellow (natural aramid)	—
Max Temperature	250 – 260°C	—
Min Temperature	−100°C	—
pH Range	2 – 12 (pure aramid); 0 – 14 with full PTFE impregnation	—
Max Pressure — Rotary Pumps	~20 bar	—
Max Pressure — Reciprocating	~100 bar	—
Max Pressure — Valves	up to ~100 bar	—
Max Shaft Speed	~10 – 15 m/s	—
Abrasion Resistance	Excellent — the reason to choose it	—
Extrusion Resistance	Excellent — high tensile strength	—
Recommended Shaft Hardness	≥ 60 HRC (or a hardened sleeve)	—
Thermal Conductivity	Low — less heat carried into the bearing than graphite	—
Standard Sizes	3 mm – 25 mm square section	—
Supply Form	Coil / spool by weight, or pre-cut rings	—

Properties in Detail

Mechanical Properties

Abrasion Resistance: Excellent
Extrusion Resistance: Excellent (high tensile fibre)
Max Shaft Speed: ~10 – 15 m/s
Compressibility: Moderate — holds its section under load
Shaft Wear Risk: Can abrade soft shafts — hardened shaft advised

Thermal & Chemical

Max Temperature: 250 – 260°C
Min Temperature: −100°C
pH Range: 2 – 12 (0 – 14 fully PTFE-impregnated)
Steam Suitability: Limited — use graphite instead
Thermal Conductivity: Low

Pressure Ratings

Rotary Pumps: ~20 bar
Reciprocating: ~100 bar
Valves: up to ~100 bar
As End Rings: Extends the pressure limit of a softer core packing

Manufacturing

Aramid packing is produced by interlock-braiding continuous high-tenacity aramid yarn into a dense square section, then impregnating it with a PTFE dispersion and a break-in lubricant. The interlock braid is what gives it its extrusion resistance: every strand is locked into the structure, so under pressure the packing cannot unravel or squeeze out through the gland clearance.

The PTFE impregnation does two jobs. It lubricates the packing during run-in so it does not burn the shaft dry, and it fills the braid so the packing seals without needing to be crushed excessively tight. Fully PTFE-impregnated grades also widen the chemical range from roughly pH 2–12 (bare aramid) to the full pH 0–14.

Sizes & Availability

Aramid packing is supplied in standard square cross-sections. The size you need is set by your stuffing box: packing size = (bore − shaft diameter) ÷ 2. Our Gland Packing Calculator will work out the size, ring length and total metres for you.

Section Size	Typical Use	Availability
3 mm	Small pumps, instrument valves	Stock
4 mm	Small pumps	Stock
5 mm	Small / medium pumps	Stock
6 mm	Medium pumps, valves	Stock
8 mm	Medium pumps, slurry pumps	Stock
9.5 mm	Slurry & process pumps	Stock
10 mm	Slurry & process pumps	Stock
12 mm	Large slurry pumps	Stock
14 mm	Large pumps, agitators	Stock
16 mm	Large pumps, agitators	Stock
19 mm	Heavy slurry / dredge pumps	Stock
20 mm	Heavy slurry / dredge pumps	Stock
22 mm	Heavy duty	To order
25 mm	Heavy duty	To order

Supplied by weight on coils/spools, or as pre-cut rings to your shaft and bore dimensions. Tell us shaft diameter, stuffing box bore and number of rings and we will supply exactly what fits.

Chemical Resistance

Aramid itself handles roughly pH 2–12. Full PTFE impregnation widens this to the complete pH 0–14 range. Aramid is chosen for mechanical abrasion resistance, not for chemical duty — where the media is the main problem, use Pure PTFE Gland Packing instead.

Medium	Resistance	Notes
Water & Slurry (abrasive)	Excellent	The application aramid exists for
Mineral Oils & Fuels	Good	Well suited
Solvents	Good	Generally good resistance
Alcohols	Good	Suitable
Mild Acids	Fair	Limited — PTFE-impregnated grades do better
Strong Acids	Fair	Use Pure PTFE packing instead for acid duty
Strong Alkalis	Fair	Limited — confirm concentration with us
Steam	Fair	Temperature ceiling is the limit — use graphite for steam
Chlorine & Oxidizers	Poor	Not recommended

General guidance for the material family at normal industrial concentrations. See the full Chemical Compatibility Chart, and confirm your exact chemical, concentration and temperature with us before final selection.

Applications

Aramid packing goes wherever hard particulate destroys ordinary packing.

Slurry & Mineral Pumps The core application. Mining, dredging and mineral-processing slurry pumps carry fine hard particulate that shreds standard packing; aramid resists it and delivers service life measured in months rather than weeks.

Sugar Mill Pumps Cane juice, mud and massecuite are abrasive and run continuously through the crushing and boiling season. Aramid packing survives the campaign where cotton and jute packing would need repeated changeouts.

Pulp & Paper Stock Pumps Pulp stock carries fibre and grit. Aramid packing on stock pumps and pulpers resists this abrasion far better than standard yarns.

Extrusion-Resistant End Rings Two aramid rings at each end of the stuffing box, with a softer PTFE or graphite core between them. This is a very common real-world set: it puts the extrusion resistance exactly where the pressure differential is highest, without running hard fibre along the whole shaft.

High-Pressure Reciprocating Pumps Aramid’s high tensile strength means it will not extrude through the gland clearance under reciprocating pressure, where softer packings would blow out.

Water & Wastewater Intake Pumps Raw intake and sludge lines carry grit that wears out standard packing prematurely. Aramid handles the abrasion; the media itself is chemically undemanding.

Industries

Why Aramid Gland Packing is specified in each of the industries we serve.

Mining & Mineral Processing

Mining puts more abrasive load on a shaft seal than almost any other industry. Slurry pumps, cyclone feed pumps and tailings lines handle fine, hard, angular particulate continuously, and a packing not built for it is consumed in a matter of weeks. Aramid gland packing is the standard answer: its high-tenacity fibre resists both the abrasion of the solids and the extrusion pressure that would push a softer packing out through the gland clearance. The economic case is straightforward — the packing costs more per metre than cotton or acrylic, but the difference in service life is typically measured in months versus weeks, and each changeout on a slurry pump is unplanned downtime. The one thing to check before specifying it is shaft condition: aramid is hard, and on a soft or already-scored shaft it can accelerate shaft wear, so a hardened shaft or sleeve is advised.

Sugar Mills

A sugar mill runs a hard, continuous campaign, and almost everything pumped during it is abrasive — cane juice carrying fibre and sand, mud from the clarifiers, thick massecuite. Standard cotton and jute packing wears through this quickly, and every gland repack during the season is production lost at exactly the time the mill cannot afford it. Aramid gland packing resists the fibre and grit that causes that wear, making it the practical choice for juice, mud and massecuite pumps where changeout frequency is the real cost. Its temperature ceiling of around 250–260°C comfortably covers juice and mud service. For the mill’s boiler-feed and steam-side pumps, however, aramid is the wrong material — those need graphite packing, which is rated far higher.

Paper Mills

Pulping and stock preparation combine wet, fibrous stock with grit and filler, and the mixture is quietly abrasive on any shaft seal. Stock pumps, pulpers and refiners fitted with standard packing wear out faster than the maintenance manual predicts, and the cause is almost always the abrasive load rather than the chemistry — the media itself is fairly benign. Aramid gland packing addresses that directly, resisting fibre and particulate wear far better than cotton or acrylic yarns and extending the interval between repacks. As with mining, the seal on the boiler and steam side of the mill is a different problem entirely and calls for graphite packing. Aramid belongs on the wet, abrasive stock side, where its abrasion resistance rather than its heat rating is what matters.

Water & Wastewater Treatment

A treatment plant is really several sealing problems in one facility, and it is a mistake to standardise on a single packing across all of them. Clean-water pumps are undemanding and are best served by economical cotton or jute packing. But raw intake, grit-channel and sludge pumps handle water carrying sand and grit, and that particulate is what destroys packing prematurely. Aramid gland packing is specified on exactly those lines: it resists the abrasive wear that consumes ordinary packing, without the cost of a chemical-grade material the duty does not need. For the plant’s chlorination and chemical dosing lines, the problem flips from abrasion to chemistry, and PTFE packing is the correct choice there instead. Matching the packing to the actual failure mode on each line is what keeps the whole plant reliable.

Aramid vs Other Gland Packings

Pick on the dominant problem: abrasion, heat, or chemistry. Aramid wins on abrasion — and only on abrasion.

Property	Aramid	Graphite	Pure PTFE	Cotton / Jute
Max Temperature	250 – 260°C	450°C (650°C valves)	260°C	~100°C
Abrasion Resistance	Excellent	Fair	Fair	Poor
Chemical Resistance	Fair (pH 2–12)	Excellent	Excellent (pH 0–14)	Poor
Extrusion Resistance	Excellent	Good	Fair	Poor
Steam Service	No	Yes — the standard	Limited	No
Shaft Wear Risk	Higher — hardened shaft advised	Low (self-lubricating)	Low	Low
Relative Cost	High	Medium	Medium–High	Low
Choose It For	Slurry & abrasive duty	Steam & high heat	Chemicals, food, any pH	Plain water, low cost

Advantages & Limitations

Advantages

Outstanding abrasion resistance — dramatically longer life than any conventional yarn on slurry duty.
Very high tensile strength: resists extrusion through the gland clearance under pressure.
Handles high shaft speeds (up to roughly 10–15 m/s).
Low thermal conductivity — carries less heat into the bearing than graphite packing.
PTFE-impregnated grades extend chemical resistance to the full pH 0–14 range.
Works excellently as extrusion-resistant end rings around a softer core packing.

Limitations

Not a high-temperature packing. Ceiling of around 250–260°C — do not use it for steam or boiler-feed service; use graphite instead.
Can abrade a soft shaft. Aramid is a hard fibre; a hardened shaft or sleeve (typically ≥ 60 HRC) is recommended, especially on high-speed rotating duty.
Chemical resistance is only fair as bare aramid (roughly pH 2–12) — for aggressive chemistry, PTFE packing is the correct material.
More expensive per metre than cotton, jute or acrylic packing — justify it on abrasion, not as a general-purpose upgrade.
Not recommended for chlorine or strong oxidizing media.

Installation, Storage & Maintenance

Installation

Cut rings squarely on a mandrel of the correct shaft diameter — never spiral-wind a continuous length into the box. Fit one ring at a time, seating each fully before adding the next, and stagger the joints of successive rings by 90° or 120° so there is no straight leak path through the set. Tighten the gland nuts finger-tight plus a small amount only; over-tightening aramid burns the shaft and destroys the packing. Allow a slight, controlled drip during run-in, then take up gradually. See our step-by-step gland packing installation guide.

Storage

Store coils and spools in a clean, dry place out of direct sunlight, in the original wrapping. Aramid is sensitive to prolonged UV exposure, so keep it covered. Keep it away from oils and solvents that could wash out the PTFE and lubricant impregnation before it goes into service.

Maintenance

A correctly installed gland should show a slight, controlled drip — a bone-dry gland is over-tightened and is burning the packing and the shaft. Take up the gland nuts gradually as the packing beds in, never in one large step. Inspect shaft or sleeve condition at every repack: a scored shaft will chew through even aramid packing, and replacing the packing without addressing the shaft just repeats the failure.

Buying Guide

What to tell us so we quote the right grade first time.

Shaft diameter and stuffing box bore. These two figures determine the packing section size: (bore − shaft) ÷ 2. Our Gland Packing Calculator works it out, plus the total metres you need.
Number of rings, and quantity of pumps. So we can supply the correct total length with a wastage allowance.
What is the media, and is it abrasive? Aramid is the right answer for abrasive slurry. If the real problem is heat or chemistry, tell us — a different packing will serve you better and probably cost less.
Operating temperature and pressure. Confirm you are within the 250–260°C ceiling. Above that, you need graphite packing.
Rotary, reciprocating or valve? The pressure and speed limits differ significantly between the three duties.
Shaft hardness / sleeve condition. Important with aramid. If the shaft is soft, worn or scored, tell us — we may recommend aramid end rings with a softer core rather than a full aramid set.

Standards & Compliance

Supplied as a braided packing to standard commercial square cross-sections (3 mm to 25 mm).
PTFE impregnation to the same food-safe PTFE chemistry used across our PTFE range, where food-grade duty is specified.
Aramid fibre is the generic material class (the same fibre family marketed as Kevlar®); Kevlar® is a registered trademark of its owner and we do not imply supply of any specific branded fibre unless stated on the order.
Certificates of conformity available on request — tell us at the point of order if you need documentation.

Downloads

Product Datasheet (PDF) Specifications, applications and industries served.

Need a drawing or a specific size? Send your requirement on WhatsApp and we will confirm what is achievable in this material.

Frequently Asked Questions

What is aramid gland packing used for?

Abrasive service, above all. Slurry pumps, mineral processing, dredging, sugar-mill juice and mud pumps, pulp stock pumps, and gritty water/wastewater intake lines — anywhere hard particulate destroys ordinary packing.

What is the maximum temperature for aramid packing?

Around 250–260°C. It is chosen for abrasion resistance, not heat. For steam and boiler-feed service, use graphite packing (450°C on rotating equipment, up to about 650°C on valves).

Can I use aramid packing for steam?

No — this is the most common misuse. Aramid’s temperature ceiling is far too low for steam service. Graphite gland packing is the correct material for steam.

Is aramid packing the same as Kevlar packing?

Effectively yes in material terms — Kevlar® is a well-known brand of aramid fibre. We supply aramid-fibre packing; unless a specific branded fibre is stated on your order, we do not imply supply of that brand.

Will aramid packing damage my shaft?

It can, if the shaft is soft, worn or scored. Aramid is a hard, tough fibre. Datasheets typically recommend a shaft hardness of at least 60 HRC, or a hardened sleeve. If your shaft is not hard, a very common solution is to use aramid only as end rings with a softer PTFE or graphite core.

What are aramid end rings?

Two aramid rings fitted at each end of the stuffing box, with a softer packing (PTFE or graphite) as the core between them. The aramid resists extrusion exactly where the pressure differential is highest, while the softer core runs against the shaft. It is one of the most practical real-world packing sets.

What size aramid packing do I need?

Packing size = (stuffing box bore − shaft diameter) ÷ 2, rounded to the nearest standard section. Our Gland Packing Calculator does this for you and also gives total metres required.

What pressure can aramid packing handle?

Roughly 20 bar on rotary pumps, and up to about 100 bar on reciprocating pumps and valves. Its high tensile strength is what gives it that extrusion resistance.

What shaft speed can aramid handle?

Up to roughly 10–15 m/s, depending on grade and duty — high enough for most process pump applications.

What pH range does aramid tolerate?

Bare aramid is roughly pH 2–12. Fully PTFE-impregnated grades widen this to the complete pH 0–14 range. If chemistry is your main problem rather than abrasion, Pure PTFE packing is the better choice.

How many rings do I need in the stuffing box?

Typically 4 to 6, depending on the box depth. Count what came out, or tell us the box dimensions and we will advise.

Should the gland drip?

Yes — a slight, controlled drip is correct and necessary. It lubricates and cools the packing. A completely dry gland means it is over-tightened, which burns the packing and scores the shaft.

Why did my new packing fail quickly?

The most common causes are: over-tightening the gland (burns the packing), a scored or worn shaft (chews through any packing), joints not staggered (straight leak path), or spiral-winding a continuous length instead of fitting individual cut rings.

How do I cut the rings?

Cut them squarely on a mandrel of the same diameter as the shaft, so each ring closes properly. Never wind a continuous length into the box — it will not seal and it will extrude.

Aramid vs graphite — which do I need?

Ask what is destroying your current packing. Abrasive particulate → aramid. Heat and steam → graphite. They solve completely different problems, and each is the wrong choice for the other’s duty.

Aramid vs PTFE packing — which do I need?

Abrasion → aramid. Aggressive chemistry, food or pharmaceutical duty → Pure PTFE. PTFE-impregnated aramid sits between the two, giving abrasion resistance with a widened chemical range.

Is aramid packing worth the extra cost?

On genuinely abrasive duty, yes — the service-life difference is typically months versus weeks, and each unplanned repack on a slurry pump costs far more in downtime than the packing. On clean water duty it is a waste of money; use cotton or jute there.

How is aramid packing supplied?

By weight on coils or spools, or as pre-cut rings made to your shaft and bore dimensions. Tell us shaft diameter, box bore and ring count and we will supply exactly what fits.

Does aramid packing need lubricant?

It comes PTFE- and lubricant-impregnated, which handles run-in. Do not add grease unless the pump manufacturer specifies it — over-lubricating can wash out the impregnation.

How should I store it?

Clean, dry, in the original wrapping, out of direct sunlight — aramid degrades with prolonged UV exposure. Keep it away from solvents that would strip the impregnation.

Aramid Gland Packing