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 5996-00-553-7348
NSN 5910-00-530-6094
NSN 5990-01-042-8524
NSN 6240-00-421-1862
NSN 6650-01-535-6287
NSN 5855-00-361-0167
NSN 5996-01-265-3657
NSN 5998-00-292-9515
NSN 6135-00-134-6648
NSN 5905-01-364-8594
NSN 5925-01-064-4712
NSN 5925-00-186-8669