Sapphire Energy
Insulated Cable Clamps (10pc)
Insulated Cable Clamps (10pc)
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Insulated Stainless Steel Cable Clamps (Rubber-Lined Cable Straps)
Securely fasten and protect your cables with our Insulated Cable Clamps (also commonly used as cable straps). Constructed from a 304 stainless steel band wrapped in EPDM rubber, these clamps provide a strong, vibration-resistant hold in demanding environments including marine, RV, off-grid, and portable power systems.
The wrap-around stainless strap design delivers excellent strength and corrosion resistance, while the EPDM rubber lining grips firmly without damaging cable insulation. Ideal for securing battery cables, wiring looms, pipes, tubing, and rods in both mobile and fixed installations.
Unlike zip ties or plastic clips, these rubber-lined clamps help reduce vibration noise, prevent chafing, and keep heavy cables securely supported over time — especially where movement and abrasion are the enemy.
Why You’ll Love These
- 304 stainless steel band for corrosion resistance and long service life
- EPDM rubber lining protects cable insulation and reduces abrasion
- Vibration-resistant hold ideal for RV, marine, and mobile installs
- Keeps wiring secure, tidy, and professional-looking
- Excellent choice for battery cables and other heavy-gauge wiring
Real-World Uses
- Strapping battery cables inside RVs, vans, and boats
- Providing strain relief for inverter and charger DC wiring
- Bundling wiring harnesses (even with mixed sizes)
- Keeping heavy-gauge cables from rubbing or vibrating in battery compartments
- Organizing wiring along frames, walls, or bulkheads
- Replacing zip ties or plastic clips in high-vibration areas
Tip: These are a must-have add-on when installing battery cable, lugs, fuse blocks, or inverters — small hardware that makes a big difference in long-term reliability.
These rubber-lined stainless steel cable clamps are often used as cable straps for battery cables, marine wiring, RV electrical systems, and other vibration-prone installations.
Recommended Sizing
Install tip: Measure the outside diameter of the cable jacket (not conductor size) for best fit.
| Clamp Size | Typical Applications |
|---|---|
|
6 mm (1/4") |
Battery cable: #6, #4 AWG Welding cable: #6, #4 AWG RW90: #10, #8, #6, #4, #3 AWG |
|
12 mm (1/2") |
Battery cable: #6, #4 AWG Welding cable: #1, #2, #1/0, #2/0 AWG DLO type: #4, #2 AWG RW90: #4/0 AWG, 250 / 300 / 350 MCM |
|
18 mm (3/4") |
Battery cable: #2/0, #4/0 AWG Welding cable: #4/0 AWG, 250 MCM DLO type: #1, #1/0, #2/0 AWG |
Sizes are provided as general guidance only and are not guaranteed to fit all cable constructions.
What’s Included
- 10 × insulated stainless steel cable clamps
Also known as: rubber lined cable clamps, stainless steel P-clamps, insulated cable straps, battery cable clamps.
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Changing up our batteries to the new ones from Sapphire has been amazing so it just made sense to tidy up the wiring as well. These clamps made it easy and provide an extra level of protection.