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Sealing Business

Composite Product

AIR WATER MACH's composite products and molded products are used in a variety of fields ranging from home appliances and automobile parts to medical supplies. These are custom-made products tailored to customer needs and we continue to incorporate the advanced mixing, molding and composite technology that we have developed alongside our O-rings. In addition, we cater to the needs of our customer with our high performance products such as molded products made with ultra-high durability polymers and resin concrete products with excellent durability.

Faucet Valve Seat

These valves are used in the inspection and repair of pneumatic valves for faucets, fire hydrants, and more.
They can be used in sliding parts such as valves and pumps.


The sliding part of the valve seat is covered with fluororesin (PTFE), which has the following advantages:

  • Prevents sticking to the valve body
  • Provides excellent abrasion resistance
  • Reduces friction resistance
  • Reduces permanent strain and stabilizes the seal due to the rubber elasticity
  • Prevents deformation and elongation with reinforced brackets

It conforms to Japan Water Works Standard JWWA B-126 and is also hygienically safe.


Fluororesin (PTFE) is firmly adhered to the sliding rubber part which comes in contact with the valve body.


Evaluation of frictional resistance

PTFE has very low static and dynamic frictional resistance and has approximately 1/30th the resistance of general rubber.
Static frictional resistance (unit: N) Dynamic frictional resistance (unit: N)
PTFE 0.05 0.02
NBR 1.0~1.5 0.5~0.8

Based on AWM test results

Evaluation of adhesive strength

Special adhesive technology is used to provide adhesive strength that leads to rubber breaking without separating at the interfacial boundary.
Nitrile rubber (NBR) Chloroprene rubber (CR)
Peel strength 7N/mm 7N/mm
Destruction state No rubber breakage/PTFE rupture 100% destruction of rubber part

Conforms to JIS K6256 180-degree peel test

Other rubber molded products and composite products

Rubber molded products and composite products

Caster wheels