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  2. Well nut - Wikipedia

    en.wikipedia.org/wiki/Well_nut

    A well nut consists of a flanged neoprene bushing with a nut embedded in the non-flanged end. The bolt is passed through one of the pieces to be fastened and threaded onto the nut from the flanged end. The non-flanged end is then inserted through the other piece to be fastened. As the bolt is tightened, friction from the neoprene flange against ...

  3. Thread seal tape - Wikipedia

    en.wikipedia.org/wiki/Thread_seal_tape

    Thread seal tape is wrapped around the threads, lubricating the connection and allowing the two pieces to be screwed deeper together. Thread seal tape (also known as PTFE tape, Teflon tape, or plumber's tape) is a polytetrafluoroethylene (PTFE) film tape commonly used in plumbing for sealing pipe threads. The tape is sold cut to specific widths ...

  4. Banjo fitting - Wikipedia

    en.wikipedia.org/wiki/Banjo_fitting

    Two banjo fittings (upper center of photo) atop automotive brake calipers. The copper crush washer in the gap between the fitting and body of the caliper completes the seal. Compared to pipe fittings that are themselves threaded, banjo fittings have the advantage that they do not have to be rotated relative to the host fitting. This avoids ...

  5. Bonded seal - Wikipedia

    en.wikipedia.org/wiki/Bonded_seal

    A bonded seal commonly seals between bolt head and body. In mechanical engineering, a bonded seal is a type of washer used to provide a seal around a screw or bolt. Originally made by Dowty Group, they are also known as Dowty seals or Dowty washers. [1] Now widely manufactured, they are available in a range of standard sizes and materials [2 ...

  6. Hose clamp - Wikipedia

    en.wikipedia.org/wiki/Hose_clamp

    A captive nut is attached to one end, and a captive screw is attached to the other end. When the screw is tightened, the overlapped ends of the wire are pushed apart, tightening the wire loop around the hose. For an explanation of why this design is used, see the section on sealing the connection.

  7. National pipe thread - Wikipedia

    en.wikipedia.org/wiki/National_pipe_thread

    National Pipe Taper Fuel (NPTF, also called Dryseal American National Standard Taper Pipe Thread, defined by ASME B1.20.3) is designed to provide a more leak-free seal without the use of PTFE tape (often referred to by the popular brand name "Teflon") or another sealant compound. NPTF threads have the same basic shape but with crest and root ...