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 5905-01-353-0284
NSN 6240-00-353-5753
NSN 5920-01-627-7966
NSN 5925-00-816-6658
NSN 6240-01-245-0137
NSN 5960-01-466-0768
NSN 5950-01-359-8952
NSN 2925-00-714-3932
NSN 6620-01-400-2928
NSN 5935-01-048-5408
NSN 6685-01-323-5272
NSN 6150-01-200-3591