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 7035-01-577-0003
NSN 5925-00-177-4654
NSN 6645-01-536-6111
NSN 6135-01-101-5039
NSN 6135-01-579-8864
NSN 6320-01-399-1633
NSN 5990-01-609-4793
NSN 5930-00-113-5240
NSN 7035-00-541-8516
NSN 6135-00-866-2311
NSN 6610-01-535-4230
NSN 5895-01-593-3360