Air Rifle Service Kits Unpacked: What They Are, Why They're Needed & Which Kits We Stock
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Air rifles are precision-engineered systems that rely heavily on one thing many shooters rarely think about until something goes wrong: seals.
Whether you're shooting an Edgun Leshiy 2, Air Arms S200, AGT Vixen or a classic Theoben rifle, every airgun contains multiple O-rings and sealing components responsible for containing air pressure and maintaining consistent performance.
Over time these seals wear, harden, become damaged or simply reach the end of their service life. That's where air rifle service kits come in.
In this guide, we'll take a closer look at what service kits contain, why they're important and the kits now available from Seal With Selo.
Why Do Air Rifles Need Servicing?
Most modern PCP air rifles operate using compressed air stored at pressures often exceeding 200 bar.
Every fill cycle, every shot and every pressure change places stress on the seals throughout the rifle.
Eventually, even high-quality seals will begin to wear.
Common symptoms of worn seals include:
- Slow air leaks
- Reduced shot count
- Pressure loss during storage
- Inconsistent velocities
- Reduced accuracy
- Difficulty maintaining regulator pressure
Many of these issues can be resolved simply by replacing the affected O-rings and seals.
The Hidden Heroes: O-Rings
When shooters think about air rifle performance, they often focus on barrels, regulators and pellets.
However, O-rings are arguably one of the most important components in the entire system.
These small sealing elements are responsible for:
Air Retention
Preventing compressed air from escaping from reservoirs, valves and regulators.
Pressure Management
Ensuring air moves through the rifle exactly as intended.
Component Protection
Reducing wear between moving parts and helping prevent contamination entering critical areas.
Consistent Performance
Supporting stable pressures and repeatable shot-to-shot results.
A failed O-ring costing pennies can easily render an air rifle unusable.
Why Different O-Ring Hardnesses Matter
One question we are often asked is why service kits contain different types of O-rings.
The answer lies in the pressure each seal must withstand.
NBR 70 O-Rings
NBR 70 is one of the most commonly used sealing materials in airgun applications.
Its flexibility allows it to create excellent seals while remaining easy to install.
Typical uses include:
- Static sealing applications
- Low to medium pressure sealing
- General airgun maintenance
NBR 90 O-Rings
NBR 90 is significantly harder and is often used in higher-pressure areas.
The increased hardness helps resist deformation and extrusion under pressure.
These O-rings are commonly used in:
- High-pressure air systems
- Regulator assemblies
- Critical sealing points
For this reason, our service kits contain a mixture of NBR 70 and NBR 90 O-rings where required.
What's Included in Our Service Kits?
Rather than sourcing individual seals one at a time, service kits provide a convenient collection of the components most commonly required during maintenance.
The exact contents vary by rifle model, but each kit has been assembled with practical servicing in mind.
Edgun Leshiy 2 Service Kit
The Edgun Leshiy 2 is known for its compact design and advanced engineering, but like all PCP rifles it relies on numerous seals throughout the air system.
Our Edgun Leshiy 2 Service Kit contains the key NBR 70 and NBR 90 O-rings required for servicing and maintenance.
Whether you're carrying out preventative maintenance or replacing worn seals, having the correct sizes on hand makes the job considerably easier.
Air Arms S200 Service Kit
The Air Arms S200 has earned a reputation as one of the UK's most popular PCP air rifles.
Our Air Arms S200 Service Kit contains:
- NBR 70 O-rings
- NBR 90 O-rings
- Bonded washer
The inclusion of the bonded washer provides an additional sealing component often required during maintenance, making this one of the most complete kits currently available in our range.
Theoben Rifle Service Kit
Theoben rifles remain highly sought after thanks to their build quality and innovative designs.
As many models have now seen years of service, replacing ageing seals can play a significant role in maintaining performance and reliability.
Our Theoben Rifle Service Kit contains the essential sealing components required to keep these iconic rifles operating as intended.
AGT Vixen Service Kit
The AGT Vixen has quickly established itself as one of the most popular compact PCP rifles on the market.
Like any high-pressure air rifle, proper seal maintenance is vital to ensure consistent performance.
Our AGT Vixen Service Kit contains the key NBR O-rings required for routine servicing and repairs.
Why Buy a Complete Service Kit?
While it is possible to source individual O-rings separately, complete service kits offer several advantages:
- Correct sizes already selected
- No guesswork when ordering
- Cost-effective maintenance
- Convenient storage of spare seals
- Faster repairs when needed
For many shooters, having a service kit available before problems occur can save significant downtime later.
In Summary
Air rifle service kits may not be the most exciting accessory you can buy, but they are often among the most important.
The performance of any PCP air rifle ultimately depends on the condition of its seals, and replacing worn O-rings is one of the simplest ways to maintain reliability, efficiency and consistency.
Seal With Selo now stocks service kits for the Edgun Leshiy 2, Air Arms S200, AGT Vixen and Theoben rifle platforms, with each kit containing carefully selected NBR 70 and NBR 90 sealing components designed to support routine maintenance and servicing.
Because sometimes the smallest components make the biggest difference.