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 5835-01-501-0526
NSN 5999-00-977-5478
NSN 5975-01-218-7186
NSN 5925-01-134-4924
NSN 7035-01-413-3975
NSN 5925-01-469-6667
NSN 5985-01-193-3388
NSN 6220-01-459-9485
NSN 6610-01-630-7202
NSN 5965-01-494-2210
NSN 7035-01-413-6697
NSN 6685-00-085-4258