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 5925-01-233-8598
NSN 5835-00-675-5159
NSN 5935-01-462-1867
NSN 6620-01-424-6925
NSN 6320-00-433-2773
NSN 6240-00-905-6050
NSN 5999-01-649-7216
NSN 5950-00-243-2464
NSN 5990-01-395-4194
NSN 5960-01-577-0628
NSN 5935-01-623-6219
NSN 6645-01-093-5015