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 6110-01-275-4320
NSN 5999-00-642-9021
NSN 5835-01-302-6844
NSN 5985-00-005-2503
NSN 5999-01-179-8148
NSN 5965-00-469-5009
NSN 6220-01-267-7367
NSN 6145-00-058-8564
NSN 5905-01-383-0302
NSN 5945-01-170-5768
NSN 6130-01-489-0429
NSN 5925-01-535-7870