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 6135-00-243-8330
NSN 5975-01-157-0694
NSN 6135-01-215-1245
NSN 5905-00-163-9582
NSN 5895-01-388-3424
NSN 5925-01-026-9649
NSN 5999-01-634-0576
NSN 6150-01-500-3791
NSN 6650-01-424-3947
NSN 5975-00-160-2242
NSN 5975-01-150-7948
NSN 6650-01-323-0012