A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 4140-01-507-8055
NSN 5985-01-536-9225
NSN 5915-01-260-1404
NSN 6240-01-028-2971
NSN 6610-00-458-1790
NSN 6240-00-702-6955
NSN 5965-01-287-7235
NSN 2925-00-545-9876
NSN 2925-01-093-5479
NSN 5998-00-982-6049
NSN 5950-01-157-5883
NSN 6110-00-482-3372