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 6135-01-428-8821
NSN 5925-01-337-4928
NSN 5835-00-833-7080
NSN 5835-01-574-0080
NSN 5990-00-212-4316
NSN 5935-00-428-2944
NSN 5985-01-275-5870
NSN 6610-00-245-6177
NSN 2925-01-627-6568
NSN 5935-01-076-1520
NSN 5996-00-064-4579
NSN 5935-00-066-7982