or rubber composition", and explains, "this sliding or partial rolling of the ring . . . kneads or works the material of the ring to keep it alive and pliable without deleterious effects of scuffing which are caused by purely static sliding of rubber upon a surface. by this slight turning or kneading...
seals: synthetic rubber coating: dark blue fusion bonded epoxy control system standard materials: accessories: stainless steel, bronze & brass tubing: stainless steel or copper fittings: stainless steel or brass pilot standard materials: body: stainless steel, bronze or brass elastomers: synthetic rubber...
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