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 5920-00-621-6601
NSN 5895-00-483-0500
NSN 5935-00-646-8792
NSN 5975-01-339-9789
NSN 5910-00-411-4858
NSN 6645-00-137-1167
NSN 5965-00-762-0630
NSN 5990-01-443-2931
NSN 6685-01-608-5596
NSN 5999-00-203-5573
NSN 6240-01-047-4085
NSN 6620-01-032-3937