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 5935-00-639-1382
NSN 5925-01-311-6726
NSN 5965-00-110-3330
NSN 6110-01-373-0322
NSN 5965-00-825-6734
NSN 5925-00-790-3167
NSN 5895-01-142-1785
NSN 6685-01-138-1672
NSN 6645-01-311-5481
NSN 6685-01-201-9294
NSN 5960-01-465-6847
NSN 5975-01-634-0678