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 5855-00-407-2801
NSN 5920-01-451-5742
NSN 5930-01-056-4702
NSN 5905-00-228-6986
NSN 5920-01-451-4260
NSN 6320-01-556-2011
NSN 5965-01-476-8539
NSN 5960-00-402-3609
NSN 5965-01-509-6016
NSN 7035-00-139-6426
NSN 5990-00-446-0518
NSN 5985-01-426-1436