CNAF Gasket Sheet

General purpose aramid/NBR sheet. The industry benchmark for standard CNAF service. Excellent sealability and torque retention across water, steam, oils, fuels, and gases.

Enhanced NBR-bound grade with improved stress relaxation resistance and higher pressure capability for critical joints.

High-temperature aramid/NBR grade rated to 399 °C continuous on fluids and 232 °C continuous on gases, steam, and air per Klinger Australia datasheet. Suited to superheated steam, thermal oil, and exhaust gas service when service-medium limits are observed.

Aramid/NBR sheet formulated for oil, gas, and hydrocarbon service with enhanced blowout resistance at higher pressures.

Universal aramid/NBR sheet with balanced properties across water, steam, hydrocarbons, and refrigerants.

Garlock's general-purpose aramid/NBR sheet. Blue colour. Continuous -73 to 205 °C, 70 bar. ABS marine and BS 7531 Grade Y approved. Suited to water, oils, gasoline, and aliphatic hydrocarbons. The standard NBR Blue-Gard for fuel, oil, and general industrial flange service.

Aramid/NBR sheet originally certified to AS/NZS 4020-2005 for contact with drinking water to 40 °C — the Australian-specific differentiator in the Garlock range. Confirm current AS/NZS 4020:2018 (Amd 1:2022) certification status with the manufacturer before specification, as 4020-2005 reports are no longer valid post-1 May 2024. Suited to municipal water treatment, potable water reticulation, and installations governed by the Australian drinking water standard.

Aramid/NBR sheet for water, oils, gasoline, and aliphatic hydrocarbons. The green-coloured companion to Style 2900 (black). Compressibility 8% per ASTM F36; continuous service to 205 °C and 83 bar.

Aramid/NBR sheet engineered to swell on contact with both water and hydrocarbons, recovering bolt load and improving sealability on damaged or pitted flanges. Garlock 3760-U is NSF/ANSI 61 + 372 certified for potable water; the Style 3760 Nuclear variant is qualified to 10 CFR 50 Appendix B. Used in refinery, petrochemical, water treatment, and remedial sealing on damaged or out-of-spec flanges.

Donit's universal, standard, and general-purpose aramid/NBR range covering the full spectrum of general industrial sealing.

General purpose through to premium aramid/NBR grades. The 2005 offers superior stress retention for critical chemical processing joints.

Styrene-butadiene rubber binder with aramid fibre. Economy alternative to NBR-bound grades. Better hot water and steam condensate performance but lower oil resistance. Suited to water treatment, HVAC, and steam condensate lines.

Aramid/SBR Blue-Gard grades for water and saturated steam service. The 3200 (off-white) is ABS marine and MIL-DTL-24696 Type II approved; the 3400 (gray-black) shares similar properties. Both rated -73 to 205 °C continuous and 83 bar. Steam-capable with adequate compression (min 4800 psi assembly stress).

EPDM elastomer binder with aramid fibre. Superior hot water and steam resistance compared to NBR, with improved ozone and weathering tolerance. The preferred binder for water treatment, HVAC, and outdoor steam service. Not suited to oils or fuels.

Aramid/EPDM Blue-Gard grade with enhanced chemical resistance to mild chemicals compared to NBR/SBR variants. Continuous -73 to 205 °C, 83 bar. Higher creep relaxation (25%) than other Blue-Gard products. Designed for stable mild-chemical service rather than sustained high bolt-load applications.

Neoprene binder providing the widest media compatibility of the standard rubber-bound CNAF family. Good resistance to refrigerants, moderate oils, and weathering. Used in marine, refrigeration, and general chemical applications.

Fluoroelastomer binder with inorganic fibre reinforcement. Extends CNAF service to concentrated acids, aromatic solvents, and aggressive chemicals where standard NBR grades fail. Higher continuous temperature rating than NBR or EPDM binders.

Silicone elastomer binder for high-temperature steam, glycol, and organic solvent service. Maintains sealing performance across a very wide temperature range including sub-zero applications. Not suited to hydrocarbon oils.

CNAF sheet with PTFE or PTFE/silica filler system providing near-universal chemical resistance and FDA compliance. Combines the handleability and bolt-load retention of CNAF with the chemical inertness of PTFE. Used in food, pharmaceutical, and aggressive chemical service.

Inorganic mineral fibre reinforcement (not aramid) with high-temperature binder system. Continuous service above 250 °C, up to 400 °C+. Used in exhaust systems, furnace connections, and high-temperature process equipment where organic-fibre CNAF binders degrade.

Inorganic fibre/NBR sheet rated to 288 °C continuous and 427 °C intermittent. Bridges the temperature gap between aramid Blue-Gard grades (205 °C) and carbon-fibre Style 9450 (302 °C). Pressure rated to 83 bar. ABS marine approved and Fire Safe rated. Suited to saturated steam, refrigerants, water, oils, gasoline, and aliphatic hydrocarbons in high-temperature service.