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 5855-01-412-9449
NSN 5999-01-556-1175
NSN 6240-01-179-1189
NSN 5985-01-555-2923
NSN 5925-01-206-3488
NSN 6240-01-459-7827
NSN 6650-01-398-6797
NSN 5985-01-190-9001
NSN 6645-01-143-0137
NSN 6240-01-529-6624
NSN 6135-01-010-0891
NSN 5925-01-217-0500