The HPS 7/8" high temperature reinforced Black silicone cap is specifically designed for installation on your cooling system.
Unlike vacuum caps, which have no reinforcement and are intended for vacuum and minimal pressure, the HPS Reinforced Silicone Caps are manufactured similarly to our reinforced silicone radiator hoses.
With three layers of polyester webbing for reinforcement, HPS Reinforced Silicone Caps withstand the high temperatures and pressures of your cooling system for years.
HPS Reinforced Silicone Caps are compatible with coolant, water, air, turbocharger bypass valve ports, vacuum ports, throttle body water ports, heater cores, and more.
Temperature Range: -65 deg.
F to +350 deg.
F (177 deg.
C).
Reinforced Layer: 3-ply Polyester.
Inside Diameter: 7/8" (22mm).
Color: Black.
Wall Thickness: 4mm.
Inside Length: 1-3/16".
Overall Length: 1-5/8".
UV and ozone resistant.
Remark: HPS reinforced silicone caps are not compatible with fuel, oil, or any petroleum-based products.