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 5950-01-058-2510
NSN 5910-01-222-0769
NSN 5895-01-147-2931
NSN 6145-01-102-5698
NSN 6240-01-465-4495
NSN 6320-00-433-2773
NSN 2925-01-422-1542
NSN 6145-01-222-3172
NSN 6650-01-168-8451
NSN 6620-01-245-0184
NSN 5998-01-248-3185
NSN 5910-01-074-8450