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 5915-01-328-1333
NSN 6620-00-967-9684
NSN 2925-00-964-7128
NSN 5990-01-253-7647
NSN 5965-01-085-6158
NSN 5935-01-344-1598
NSN 6320-01-094-2634
NSN 5996-00-558-6491
NSN 5935-01-044-5741
NSN 2925-01-332-7178
NSN 6130-00-889-1461
NSN 6685-01-548-2210