O Ring Clack Valve

[92220]

I found this on the web:-

Dejay Distribution Ltd.

email: [e-mail]
Tel: [phone]

Viton Fluoroelastomer Balls

General Information:
The resilient and compliant quality of these seam-free, synthetic rubber balls offers a number of advantages in non-return valve applications. Being relatively soft they provide a good seal at low pressures and eliminate the need for highly accurate seatings which are often costly to produce. Also they dampen vibration, are quiet in operation and extend valve life.
Basic Composition:
Copolymer of vinylidene fluoride and hexafluoropropylene
Mechanical Properties:
Hardness (Durometer) 80 ± 4 Shore 'A'
Density 0.069 lbs/cub.in.
Specific Gravity 1.90
Service Temperature -29 Deg.C to 219 Deg C (-20 Deg.F to 425 Deg F)
Colour Black
Size Range:
Stock Sizes 1/8", 3/16", 1/4", 5/16", 3/8" and 1/2"
Tolerances:
Basic Dia.Tolerance ±.003"
Sphericity .003"
Surface Finish Smooth & seam-free

I have to admit that I haven't found many suppliers in UK, but there are suppliers in the U.S., with quite large ranges.

Bob.