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 5935-00-661-0825
NSN 5996-01-451-3591
NSN 5930-01-431-0765
NSN 5855-01-366-2429
NSN 6105-00-007-5599
NSN 6620-00-920-1671
NSN 5855-01-154-3871
NSN 6110-00-688-5043
NSN 5920-01-430-3158
NSN 4140-01-382-5778
NSN 5996-01-123-7977
NSN 5905-00-590-8264