Overview
The ARRMA O-Ring 7.8x2.2mm (4) Z-ARA716034 is an essential replacement part for RC enthusiasts who demand reliability and longevity from their models. These high-quality silicone O-Rings are precision-engineered to deliver consistent performance across a wide range of ARRMA RC vehicles, from monster trucks to buggies and beyond. Whether you're a seasoned competitor running your RC car UK-wide, a weekend basher enjoying off-road adventures, or someone discovering the excitement of RC models for the first time, having spare O-Rings on hand is a smart maintenance practice that keeps your models running at peak performance.
O-Rings are critical components in RC vehicles, used extensively throughout hydraulic systems, fluid containment, and mechanical assemblies to create secure seals and prevent leakage. Over time, these rubber components can degrade due to heat exposure, UV damage, and general wear from regular use. By stocking replacement O-Rings like this ARRMA set, you ensure your RC car or truck can be quickly serviced and restored to like-new condition without downtime. This pack of four O-Rings provides excellent value and ensures you have backups on hand for future maintenance needs, making it an intelligent investment for anyone serious about keeping their ARRMA RC models in top condition.
ARRMA is a globally recognised brand trusted by RC enthusiasts for delivering durable, high-performance models and genuine replacement parts. These O-Rings are manufactured to exacting standards and are the same quality components supplied with ARRMA factory-built models, guaranteeing compatibility and reliability across compatible vehicle platforms.
Key Features
- Premium-Quality Silicone Rubber — These O-Rings are crafted from durable premium-quality silicone rubber that resists degradation from heat, UV exposure, and regular use, ensuring long-lasting performance that keeps your RC vehicle sealed and functioning properly for extended periods between servicing.
- Precision Manufactured Design — Each O-Ring is manufactured to exact specifications with precision tolerances, guaranteeing a fast fit and easy installation during servicing, which means less frustration during maintenance and quicker turnaround times to get your RC model back in action.
- Pack of Four — This set includes four individual O-Rings, providing spare parts for multiple replacement jobs or allowing you to service several vehicles at once, plus keeping extras in your spares box for future use.
- 7.8mm Inside Diameter with 2.2mm Thickness — The specific dimensional specification of 7.8x2.2mm ensures perfect compatibility with designated ARRMA models and applications, preventing both leakage from oversized rings and failure from undersized rings.
- Genuine ARRMA Component — As official ARRMA replacement parts, these O-Rings are the same specification supplied with factory-built ARRMA vehicles, guaranteeing authenticity and compatibility across compatible model platforms.
Technical Performance
These silicone O-Rings represent the engineering excellence ARRMA is known for throughout the RC hobby. The 7.8x2.2mm specification is meticulously calculated to provide optimal sealing pressure without restricting movement or causing excessive drag within hydraulic systems. Silicone rubber is the material of choice in RC applications because it offers superior resistance to temperature fluctuations compared to standard rubber compounds, maintaining elasticity in both cold British weather and under the heat generated by high-performance brushless motors common in modern RC cars. The 2.2mm cross-sectional thickness provides robust structural integrity, resisting degradation even under sustained pressure in demanding off-road conditions. Whether you're running a brushless RC monster truck like the ARRMA BIG ROCK 223S, the tough GRANITE 223S, the high-speed KRATON 4X4, or the nimble QUAKE 223S, these O-Rings perform reliably across the diverse demands of different vehicle types and driving styles. Precision manufacturing ensures that each ring meets strict dimensional tolerances, creating consistent sealing performance across every unit in the pack, which is critical when servicing high-performance RC vehicles where even minor imperfections can lead to fluid loss and component damage.
What's in the Box
- 4 x Silicone O-Ring 7.8x2.2mm
Frequently Asked Questions
- What ARRMA models are compatible with the O-Ring 7.8x2.2mm? — These O-Rings are compatible with multiple ARRMA 1/10 scale RTR brushless models including the BIG ROCK 223S DSC 4X4 (available in Green, Black, and Blue variants), the GRANITE 223S DSC 4X4 (available in Blue, Gun Metal, and Red variants), the KRATON 4X4 4S V2 BLX Speed Monster Truck RTR (available in standard and Green variants), and the QUAKE 223S DSC 2WD (available in Green, Red, and Purple variants). Always verify the specific application before ordering to ensure these are the correct size for your model.
- How do I know when my O-Rings need replacement? — Signs of wear include visible cracking or hardening of the rubber, leaking hydraulic fluid from sealed assemblies, or a degraded appearance with discolouration or brittleness. Regular maintenance intervals ensure optimal performance, and many RC enthusiasts replace O-Rings annually or every 10-15 hours of use on high-performance models.
- Are these genuine ARRMA O-Rings? — Yes, these are official ARRMA replacement parts (model Z-ARA716034) manufactured to the exact specifications supplied with factory-built ARRMA vehicles, guaranteeing authenticity and compatibility with your model when purchased from authorised retailers.
- Why do I need four O-Rings in one pack? — Most ARRMA vehicles require multiple O-Rings across different hydraulic assemblies and fluid systems. This four-pack ensures you can service all necessary sealing points in one go, plus maintain spare O-Rings for future maintenance without placing multiple orders.
- How long do silicone O-Rings typically last in RC use? — Silicone O-Rings generally maintain performance for 12-18 months of regular use in typical UK hobby conditions, though lifespan depends on storage conditions, frequency of use, and exposure to UV light. Storing spares in a cool, dark environment maximises their lifespan.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the ARRMA O-Ring 7.8x2.2mm (4) Z-ARA716034 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
