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SRS-40 Silicone Rubber Fiberglass Sleeving — 4000 V

Silicone Rubber Fiberglass Sleeving — Inside Fiber / Outside Rubber · WCW source-manufactured, UL documented.

−60 °C to +200 °C (−76 ~ 392 °F)4000 V avg · 2500 V minUL 1441 · E233803UL VW-1

SRS-40 pairs the inside-fiber / outside-rubber SRS construction with a 4000 V average withstand (2500 V minimum individual). The outer silicone rubber layer resists abrasion and tracking; the fiberglass core carries the mechanical load.

Test standardUL 1441
Operating temperature−60 °C to +200 °C (−76 ~ 392 °F)
Dielectric (avg. withstand)4000 V
Dielectric (min. individual)2500 V
UL recognitionUL 1441, File E233803 (SRS-40)
Flame ratingUL VW-1

Datasheet: full ratings & dimension tables · download PDF

Built for: EV drive motor leads, generator and marine motor leads where abrasion resistance and 4000 V dielectric are both specified.

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SRS-40 Silicone Rubber Fiberglass Sleeving — Inside Fiber / Outside Rubber by WCW

Inner Diameter & Wall Thickness

Inner DiameterTolerance4000 V7000 V
0.5 – 2.0 mm+0.20 / −0.00 mm0.40 ± 0.05 mm0.45 ± 0.05 mm
2.5 – 3.0 mm+0.25 / −0.00 mm0.40 ± 0.05 mm0.50 ± 0.05 mm
3.5 – 5.0 mm+0.35 / −0.00 mm0.50 ± 0.05 mm0.55 ± 0.05 mm
6.0 – 9.0 mm+0.50 / −0.00 mm0.55 ± 0.05 mm0.60 ± 0.05 mm
10.0 – 12.0 mm+0.70 / −0.00 mm0.60 ± 0.05 mm0.65 ± 0.05 mm
13.0 – 20.0 mm+0.80 / −0.00 mm0.65 ± 0.05 mm0.70 ± 0.05 mm
22.0 – 35.0 mm+0.90 / −0.00 mm1.00 ± 0.05 mm1.50 ± 0.05 mm
Other grades in this family: SRS-70 — or see the full series datasheet.

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Send these five details with your inquiry and we will reply with a recommended series, sample plan and datasheet:

  1. ID & size (mm)
  2. Continuous operating temperature
  3. Voltage / dielectric requirement
  4. Medium exposure (oil, coolant, solvent)
  5. Certification needs (UL 1441, RoHS, REACH)