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 5925-00-529-0441
NSN 5990-01-472-2447
NSN 5935-01-535-6712
NSN 5945-01-026-5357
NSN 5905-00-128-8676
NSN 5945-00-734-7263
NSN 6105-00-075-5977
NSN 6135-01-168-2944
NSN 6105-00-186-0161
NSN 5920-00-135-4930
NSN 5950-00-079-3267
NSN 6130-01-211-6790