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 5985-00-786-2321
NSN 5905-01-029-3156
NSN 6240-01-463-8276
NSN 6150-01-355-0042
NSN 5920-00-276-8657
NSN 6685-01-044-6366
NSN 6645-01-534-5545
NSN 5935-00-434-5493
NSN 6320-01-407-8663
NSN 5905-01-389-2296
NSN 5996-00-410-8554
NSN 6610-01-630-2498