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 5975-00-167-0937
NSN 6240-01-193-1470
NSN 6220-00-139-1421
NSN 5999-01-323-8216
NSN 5996-01-042-6860
NSN 5945-01-555-8373
NSN 5930-01-218-5750
NSN 6685-01-212-3259
NSN 5996-01-294-2679
NSN 5999-01-630-1596
NSN 6135-00-209-6918
NSN 5965-01-385-4235