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 5930-01-147-9657
NSN 6135-01-539-5098
NSN 6110-01-054-5014
NSN 6685-01-369-2064
NSN 6105-01-461-3287
NSN 6145-01-315-5591
NSN 6320-00-310-1080
NSN 5835-01-384-3206
NSN 5990-01-199-4832
NSN 5985-01-094-3756
NSN 5905-01-281-5819
NSN 6320-01-180-9908