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 6110-01-648-8156
NSN 6320-01-415-0953
NSN 6150-00-776-2738
NSN 6240-01-071-7446
NSN 5975-00-175-6696
NSN 6620-00-763-2168
NSN 5950-01-645-4986
NSN 5905-00-912-0582
NSN 5855-01-151-5541
NSN 4140-00-690-0382
NSN 5895-01-487-4721
NSN 4140-01-433-1192