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 5905-01-608-4233
NSN 5930-01-033-2210
NSN 6105-00-132-3747
NSN 6685-00-702-5498
NSN 5999-01-443-3258
NSN 2925-00-759-5465
NSN 6610-00-769-6826
NSN 5915-01-246-3219
NSN 5855-01-520-8747
NSN 5935-00-153-4544
NSN 5915-00-468-3911
NSN 4140-01-443-5866