Exporter and manufactuer for SIGMA COPPORATION, NEW Jersey, which is the top pipe FITTING manufactuer in US.
A manufacturer of the highest quality o-rings, gaskets, and custom seals for water industry. We specialize in seals capable of mission critical, long term service in demanding applications. We understand that a successful seal must embody a proper engineering design, an appropriate sealing material, and a reliable, repeatable, manufacturing process.

Joint Gasket Size: 2"-48"

Gasket materials compiles in all respects with physical requirements
Specified in "ANSI/AWWA/C111/A21.11.00, UI194.

Superior Quality Synthetic Rubber materials like SBR/EPDM/Neoprene are used according to its application.
Compound tested as per ASTM D2240.

Specification:
Shore Hardness Shore A: ASTM D2240 80
Tensile strength, in MPA, min: ASTM D412 10.3
Elonggation, @Break% min. ASTM D412 150
Compression Set, % ASTM D395

Simply basing your rubber seal on the correct polymer is
Not enough. Naturally, a polymer suitable for the interplay of temperature, pressure, and environmental media is necessary for an effective seal. However, to achieve long-term service, the right polymer must be compounded with proper fillers, curatives, and chemical agents. Only then, with proper manufacture, can a seal withstand high temperature, high pressure, and chemical degradation to deliver long-term, Leak-free service.