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 5965-01-463-8176
NSN 6685-00-482-8431
NSN 5960-00-832-8449
NSN 5996-00-222-6049
NSN 6320-00-539-9283
NSN 5950-01-318-2421
NSN 6685-00-403-1226
NSN 6130-00-227-2124
NSN 2925-00-149-0760
NSN 6620-01-504-5756
NSN 5905-01-243-9852
NSN 5895-01-052-4877