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 5950-01-334-2987
NSN 6645-01-123-9277
NSN 5915-00-731-3823
NSN 6220-00-681-2707
NSN 5965-01-130-8262
NSN 6645-01-041-3533
NSN 5895-01-248-9367
NSN 6685-01-160-0215
NSN 4140-01-442-7799
NSN 6685-01-634-0611
NSN 5905-01-568-2450
NSN 5930-01-381-7708