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 6685-01-375-2841
NSN 6130-00-709-0765
NSN 5965-01-089-6801
NSN 6135-00-497-0491
NSN 5925-01-577-2556
NSN 2925-00-660-8131
NSN 6685-01-207-0666
NSN 5920-01-285-8497
NSN 5920-00-206-3595
NSN 6620-01-141-5747
NSN 6135-01-528-6896
NSN 5855-00-252-5743