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 6150-01-268-1967
NSN 5999-01-657-7930
NSN 6220-00-945-4574
NSN 4140-01-390-6348
NSN 5855-00-237-4088
NSN 2925-01-454-2046
NSN 5895-01-323-6413
NSN 5835-01-647-6426
NSN 6105-00-418-4430
NSN 5905-00-373-3263
NSN 5925-00-867-3972
NSN 4140-01-652-8977