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 2925-00-420-8151
NSN 6610-01-052-8029
NSN 5985-00-914-6299
NSN 6685-01-110-3865
NSN 5915-00-182-8068
NSN 5835-00-505-2516
NSN 5996-01-482-7596
NSN 5915-01-246-3580
NSN 5835-00-454-7239
NSN 6685-00-899-1861
NSN 6685-01-578-5953
NSN 5935-01-590-0911