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 6105-01-053-6804
NSN 5935-01-386-5930
NSN 5895-00-543-0542
NSN 6620-01-109-2764
NSN 7035-01-082-0311
NSN 2925-01-479-6491
NSN 5985-00-816-8486
NSN 5925-00-819-3985
NSN 5945-01-275-8271
NSN 5985-01-616-7153
NSN 6145-01-051-3343
NSN 6685-01-129-7472