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 5895-01-420-6926
NSN 5965-00-940-7028
NSN 5985-01-412-1085
NSN 6685-00-499-9233
NSN 6645-00-068-3536
NSN 6130-01-388-9961
NSN 5996-01-408-5632
NSN 5930-01-553-0769
NSN 6650-01-631-7780
NSN 5975-01-214-0370
NSN 6130-01-286-6557
NSN 4140-00-565-0386