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 5925-01-037-3324
NSN 2925-01-527-8745
NSN 6685-01-312-1612
NSN 5965-01-324-2441
NSN 5975-00-304-5019
NSN 6685-01-634-0611
NSN 5930-01-008-7921
NSN 6685-00-009-6844
NSN 5835-00-905-7165
NSN 5920-01-364-4664
NSN 5950-01-445-5586
NSN 6610-00-277-7206