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Product Image Internal Fill Valve / Silent Fill Valve O-Rings (Pack of 12)

Internal Fill Valve / Silent Fill Valve O-Rings (Pack of 12)


Tired of wasting expensive gas through leaking fill valves or gas spewing out around the fill valve when the magazine is full? Now you can solve that problem with this pack of 12 fill valve O-rings.


These high quality O-rings have been used at LPE for years for repairing leaking fill valves on various bands of magazines and Moscarts with perfect results every time, in addition to replacing the internal fill valve O-ring these can also be used to make most fill valves silent fill meaning you will no longer waste gas each time you fill a magazines.


Fits most fill valves including Tokyo Marui, KSC & KWA, WE, KJ Works Maruzen etc.


These can not be used to make King Arms moscart fill valves silent fill but will fit inside the valves. These do not fit inside some/most Tokyo Marui fill valves but can be used to make them silent fill.


Assembled in the United Kingdom by Lees Precision Engineering.

UK Shipping Prices

Royal Mail First Class - £1.80, free for orders over £30.00
Royal Mail First Class Signed For - £2.70 flat rate

International Shipping Prices

Royal Mail Standard Airmail - £3.00
Royal Mail Standard Airmail – Free for orders over £30.00
Royal Mail Priority Tracked & Signed For Airmail – Starts at £9.00


Lees Precision Engineering does not ship to the following countries,
China, Indonesia, Peru

Dispatch & Delivery Times

Orders are normally dispatched within 3 working days of receiving payment.

Orders within the United Kingdom generally arrive within 1 – 2 working days of being dispatched however may take upto 10 working days, especially during peak times for Royal Mail.

International orders generally arrive within 3 – 10 working days of being dispatched but may take upto 15 working days.

International orders to Canada and South American countries often take slightly longer and may take upto 20 working days to arrive from the date of dispatch.