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 6135-01-596-3145
NSN 6685-01-487-8713
NSN 4140-00-274-9638
NSN 5905-01-225-8572
NSN 6145-00-135-1436
NSN 5965-00-246-5612
NSN 5950-01-642-5062
NSN 6105-00-810-6935
NSN 5965-01-176-3227
NSN 6320-01-141-3791
NSN 7035-01-566-8130
NSN 6320-01-220-2264