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 5895-00-478-9289
NSN 5935-01-618-9146
NSN 6145-01-104-8186
NSN 6110-01-364-0966
NSN 6610-01-556-2353
NSN 6240-01-628-9240
NSN 6220-01-190-5469
NSN 5950-01-175-1835
NSN 5855-01-067-8841
NSN 2925-01-157-9204
NSN 6130-01-485-9234
NSN 6645-00-754-4108