Chesterton 122NN

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Chesterton 122NN Diaghragm Sheet Gasket
Neoprene Rubber Construction


​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Chesterton 122NN is a superior quality black diaphragm sheet gasket for use in services where a high strength nylon fabric reinforced sheet will produce the best results. 122NN's neoprene rubber construction delivers excellent service in steam, gas, air, oil, water and solvents. 122NN can be used on regulators, reducing valve actuators, or any diaphragm service.

Black diaphragm sheet
High strength nylon fabric reinforced sheet
Steam, gas, air, oil, water and solvents​
Can be used on regulators, reducing valve actuators or any diaphragm service.​
Temperature Limit 93˚C (200˚F) maximum
–0˚C (–0˚F) minimum
Pressure Limit17 bar g (250 psig)
3,2 mm (1/8") thick
Tensile Strength97 bar g (1400 psig) minimum
Elongation 300% minimum
Durometer65 to 75 Shore A
WidthMeets ASTM
Mullen Burst Test Rating83 bar g (1200 psig), obtained using burst tester with 31,5 mm (1.24") diameter opening per ASTM D751 and 1 ply material
Surface FinishSmooth





Catalog: Chesterton Packing & Gaskets (English) Chesterton Packing & Gaskets (English)pdf
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Catalog: Mechanical Packing and Gaskets (Espanol) Mechanical Packing and Gaskets (Espanol)pdf
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