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 5996-01-012-1924
NSN 5965-01-337-5408
NSN 5985-00-343-3632
NSN 5975-01-651-8878
NSN 6610-01-092-1971
NSN 5895-00-026-9870
NSN 5985-01-641-9931
NSN 6645-01-469-8778
NSN 6685-01-250-6994
NSN 6240-01-202-2492
NSN 7035-00-541-8516
NSN 5990-01-426-7350