Reference Chart

Chemical Compatibility Chart

Name: Al-Hamd Traders
Address: 28 Brandreth Road, Lahore, Punjab, PK
Telephone: +92 321 4445067

General guidance on how well each material family we supply tolerates common industrial chemicals and conditions. These are typical ratings for the material family — always confirm the exact chemical, concentration and temperature with us before final material selection.

Excellent Long-term exposure, minimal degradation Good Suitable for most conditions Fair Limited/short-term exposure only Poor Not recommended

Material	Strong Acids	Strong Alkalis	Mineral Oils & Fuels	Aromatic / Ketone Solvents	Steam & Hot Water	Ammonia	Chlorine & Oxidizers	Alcohols	Plain / Cold Water
PTFE (Sheet / Rod / Gland Packing)	Excellent	Excellent	Excellent	Excellent	Excellent	Excellent	Good	Excellent	Excellent
Graphite Gland Packing	Good	Excellent	Excellent	Excellent	Excellent	Good	Poor	Excellent	Excellent
Aramid Gland Packing	Fair	Fair	Good	Good	Fair	Fair	Poor	Good	Excellent
Rubber Sheet — NBR grade	Fair	Fair	Excellent	Poor	Fair	Poor	Poor	Good	Good
Rubber Sheet — EPDM grade	Good	Good	Poor	Poor	Good	Good	Fair	Good	Excellent
Silicone Rubber Sheet	Fair	Fair	Poor	Poor	Good	Fair	Fair	Fair	Good
Non-Asbestos Jointing Sheet	Fair	Fair	Good	Fair	Good	Fair	Poor	Good	Good
Cotton / Jute Packing	Poor	Poor	Fair	Poor	Poor	Poor	Poor	Fair	Good

How to read this chart

Ratings describe typical behaviour for the material family (e.g. PTFE, NBR rubber) under normal industrial concentrations and moderate temperature — not every specific chemical, concentration or temperature combination.
NBR and EPDM ratings differ deliberately: NBR excels with oils/fuels but is weak against solvents, while EPDM is the reverse — excellent for weathering/water but poor with oils. Choosing the wrong rubber grade for the wrong exposure is the single most common gasket failure we see.
Graphite Gland Packing is rated Poor for Chlorine & Oxidizers specifically because strong oxidizers (e.g. concentrated nitric or chromic acid) attack graphite chemically — PTFE-based packing should be used instead for that duty.
Cotton/Jute Packing is intentionally rated low across most chemicals — it is priced and positioned for plain water and general low-duty service only, not chemical exposure.
For a specific chemical, concentration and operating temperature not covered by this general guidance, contact us directly before finalising a material.