Tuf-Lok / Ring Grip / Series 688

Description:

Ring Grip Pipe Couplings

Coupling Category

Pipe Couplings

Manufacturer

Tuf-Lok

The Tuf-Lok ring grip pipe coupling is a rugged, heavy duty, self-aligning and self-grounded pipe coupling with a high end pull for almost any application where pipe ends need to be connected.

Features:
  • Self-aligning
  • Installs quickly
  • High end pull
  • High pressure rated
  • Full vacuum rated
  • Reusable
  • Absorbs vibration
  • Rigid
  • Usable on thin or thick wall pipe
  • Low cost
  • Externally leakproof
  • Self grounding
  • Smooth internal connection
  • Every coupling a union
Options:
  • Covers
    - Mild steel
    - Zinc plated
    - Stainless steel
  • Rings
    - Mild steel
    - Stainless steel
    - Aluminum
  • Custom gaskets
    - EPDM
    - Buna-N
    - Silicone
    - Fluoroelastomer
    - Others
  • High temperature design to 350° F (176° C)


Nom. Pipe Size (in.) Pipe O.D. (in.) Series Number Maximum W. P. (psig) Maximum End Load* (lbs) Dimensions (in.) Approximate Weight Ea. (lbs)
A B C
2 2.375 688 150 4600 4.26 3.45 4.14 2.3
3 3.500 688 150 6300 5.38 4.57 4.14 2.9
4 4.500 688 150 7600 6.37 5.57 4.14 3.6
5 5.563 688 150 9000 7.42 6.63 4.14 4.3
6 6.625 688 150 10100 8.49 7.69 4.14 4.9
8 8.625 688 130 12400 10.49 9.70 4.14 6.4
* Working pressure and end load are total, including equivalent loads based on proper coupling assembly.
Tuf-Lok / Ring Grip / Series 688
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   Reproductive Harm -
   www.P65Warnings.ca.gov