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 5920-01-532-8280
NSN 6240-00-144-4693
NSN 6240-00-300-9883
NSN 5985-01-146-6807
NSN 6240-01-537-1832
NSN 5910-01-046-2342
NSN 6130-01-340-3670
NSN 6150-01-591-4032
NSN 5950-00-296-5505
NSN 5855-00-908-9314
NSN 5975-00-216-4848
NSN 6320-01-318-6518