Standard Thread Valve Cap for Car and Motorcycle

The durable Standard Thread Valve Cap for Car and Motorcycle from Qimao Metal Manufacturer designed for field service and regular maintenance work, this valve cap uses a standard 5V1 (also known as 5V2 or 8V1 compatible) internal thread configuration, which matches the majority of Schrader-type valve stems across automotive, two-wheel, and HVAC applications. The outer body is molded from high-impact acetal copolymer — not the brittle recycled plastic you often see on cheaper caps. Inside, a bonded nitrile (Buna-N) rubber gasket creates a positive seal against the valve core, reducing the chance of micro-leaks that slowly drain system pressure. This cap also acts as a secondary barrier against contamination entering the valve core area, which is a common failure point in outdoor or dusty job site conditions. The hex-shaped outer profile allows hand tightening or light wrench assistance without cracking. It stays put under vibration but comes off without a fight when you need access.

Product Parameter (Specification)

Product Feature

• Standard 0.305-32 UNF internal thread fits Schrader valves on cars, bikes, motorcycles, and HVAC service ports

• Durable Standard Thread Valve Cap for Car, Motorcycle, Bicycle and HVAC Systems acetal copolymer body withstands impacts that crack cheap polystyrene caps

• Bonded Buna-N gasket seals against the valve core, not just the thread area

• Hex outer shape allows hand or light wrench installation without cracking

• No metal components = no rust seizure onto valve stems

• Matte black finish with molded grip ribs for oily fingers

• Tested from -30°C to 100°C without thread deformation or seal hardening

• Salt spray tested past 96 hours — internal threads stay clean

Application

• Replacing missing or cracked Standard Thread Valve Cap for Car and Motorcycle on daily-driven cars before winter salt hits

• Sealing tire valves on off-road motorcycles that go through mud and water crossings

• Protecting bicycle Schrader tubes stored in damp garages or bike sheds

• HVAC field service: capping off R134a or R410a access ports after charging to stop slow refrigerant weeping

• Small air compressor tank valves — keeps dust out of the check valve area

• Trailer tires that sit for months between uses (prevents dry rot of the valve core seal)

• Rental equipment fleet maintenance: quick visual check that all valves are capped before units go out

Production Details

1.Each Standard Thread Valve Cap for Car and Motorcycle weighs roughly 2 grams, so it won’t throw off wheel balance even on lightweight bicycle rims.

2.Operating temperature range is -30°C to 100°C (-22°F to 212°F), which covers engine bay heat, summer asphalt, and cold storage HVAC lines.

3.The thread design follows ISO 4570 standard, meaning it fits valve stems with nominal 0.305-inch-32 UNF threads — the same as what you’ll find on a car tire, motorcycle valve, bicycle Schrader tube, or R134a/R410a HVAC service port.

4.Salt spray testing on these caps runs past 96 hours without visible corrosion on the internal threads or sealing surface. Shelf life is effectively unlimited in dry storage.

5.The cap body uses no metal inserts, so there’s nothing to rust and seize onto the valve stem — a common headache with plated steel caps.

6.Color is matte black with a small grip rib pattern molded into the sidewalls.