High Temp 3-Ply Reinforced Silicone Coolant Cap Bypass Heater, 5/16 Inch (8mm) Fit, Black, 1-1/2 Inch Length, 4mm Wall, 350F Max, Great For Coolant, Water, Air, And Turbo Bypass Lines
✔️ ID 8 mm, 1.5 in long, 4 mm wall, 350°F max
Our High Temp 3-Ply Reinforced Silicone Cap is designed to seal coolant, water, air, and turbo bypass lines in automotive cooling systems. Built with a 3-ply polyester reinforced silicone, it handles high heat up to 350°F (177°C) and provides reliable seals in ports like heater cores, bypass valves, and vacuum ports. Not compatible with fuel or oil.
✅ Inside Diameter: 5/16" (8 mm)
✅ Overall Length: 1-1/2" (38 mm)
✅ Wall Thickness: 4 mm (0.157 in)
✅ Temperature Range: -65°F to 350°F (-54°C to 177°C)
✅ Reinforcement: 3-ply Polyester
✅ Material: High-Temperature reinforced silicone
✅ Compatible with coolant, water, air, turbo bypass ports, vacuum ports, heater cores
✅ Color: Black
✅ Not for fuel, oil, or petroleum-based products
💡 What is a handy use for a high-temperature reinforced silicone cap in cooling systems?
These caps provide a sturdy seal on multiple ports in cooling lines.
- Handy for coolant ports and turbo bypass lines- Useful for vacuum ports and heater cores
- Durable 3-ply reinforced silicone handles heat cycling
- Resists coolant and automotive fluids up to 350°F (177°C)