Petromax Pump Leather HK150/HK250/HK350/HK500

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Petromax · Lamp maintenance
Pump leather HK150/HK250/HK350/HK500: a small part that makes all the difference to the pump stroke The pump leather seals the pump shaft in the Petromax hand pump. When it dries out, hardens or wears, the pump gets less grip and building pressure becomes difficult.
Avoid buying the wrong part: The leather only helps if the pump seal is actually the problem. If the pump bottom valve, other seals or the pump body are damaged, you need the appropriate replacement part.

Good fit / probably not a fit


Good fit if … your HK150, HK250, HK350 or HK500 builds hardly any resistance when pumping and the existing leather is dry, hard or damaged.


Probably not a fit if … the tank is losing pressure elsewhere, or the valve, pump cap or entire pump is the cause.


Features that matter in practice


Mechanical seal The leather sits against the pump shaft and enables an effective pump stroke. Flexibility is essential for proper function.


HK150 to HK500 According to the available Shopify data, suitable for HK150, HK250, HK350 and HK500.


Prepare before installation Grease and knead until soft before installation. Dry leather seals less effectively and wears unnecessarily.


Maintenance instead of full replacement If only the leather is worn, replacing this individual part may be a more sensible repair than buying a whole new pump.


Limitations & avoiding the wrong purchase
Weak pressure buildup does not automatically mean the pump leather is defective. Before replacing parts, check the condition of the leather. If pressure loss continues, also check the pump bottom valve, seals, pressure gauge and tank connections.
Technical data in practical terms
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Compatibility HK150 / HK250 / HK350 / HK500.


Component Pump leather for the mechanical seal of the hand pump.


Care Grease and soften before installation; available product information lists technical petroleum jelly as a suitable care product.


Diagnosis Useful when the leather is worn, not as a blanket fix for every loss of pressure.


Included in delivery
1 × Petromax pump leather. Spreader, nut, pump, pump cap, other seals and care products are not automatically included.
Safe installation
Only work on a cold lantern that is completely depressurized. After installation, check pump function and for leaks before returning the lantern to regular use.
FAQ
Which lanterns is the pump leather compatible with? According to available product information, Petromax HK150, HK250, HK350 and HK500. Does it need to be greased? Yes. The leather should be greased and kneaded until soft before installation. Will it fix every loss of pressure? No. Other valves and sealing points may also be the cause.
Black Raptor · Buying advice
A typical wear part that can be replaced easily and inexpensively. Check the old leather first—if it matches the symptoms, replacing just this part makes more sense than swapping parts on a hunch.