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 2925-01-327-3069
NSN 6645-01-607-5999
NSN 6240-00-160-9223
NSN 6320-00-908-6841
NSN 5975-00-810-1190
NSN 6220-01-127-8143
NSN 5965-00-722-7574
NSN 4140-01-652-5868
NSN 5990-00-160-1176
NSN 5990-01-184-2550
NSN 6610-00-056-5889
NSN 5975-01-617-6179