{"product_id":"wolverine-o-ring-service-kits","title":"Wolverine O-Ring Service Kits — All Engines and Valves","description":"\u003cdiv style=\"background:#edfaf1;border-left:4px solid #27ae60;padding:12px 16px;border-radius:0 6px 6px 0;margin:0 0 16px;font-size:13px;\"\u003e\n\u003cstrong style=\"color:#1a6b3a;\"\u003eWolverine O-Ring Service Kits — the complete seal set for every Wolverine engine and valve, in one place.\u003c\/strong\u003e Pick your engine from the dropdown.\u003c\/div\u003e\u003cp\u003eO-rings are the quiet failure point in any HPA system. They are cheap, they are consumable, and when one hardens or splits you get a leak that shows up as inconsistent velocity, worse air efficiency, or an engine that will not hold pressure between shots. People spend a long time blaming regulators and nozzles for what is a two-pound piece of rubber.\u003c\/p\u003e\u003cp\u003eEach kit here is the \u003cstrong\u003ecomplete set for one engine or valve\u003c\/strong\u003e, so a service means replacing everything at once rather than hunting for the one that failed. That is the right way to do it: seals age together, and finding a second dead o-ring a week after the first wastes another bench session.\u003c\/p\u003e\u003cp\u003eSelect your platform from the dropdown. Every kit is Wolverine's own, matched to that engine's exact sizes.\u003c\/p\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eWhich kit do I need?\u003c\/h2\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;margin:0 0 18px;\"\u003e\n\u003ctr style=\"background:#1B3A6B;color:#fff;\"\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eKit\u003c\/th\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eCovers\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e\u003cstrong\u003eBOLT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eBOLT engine — VSR-10 and bolt-action platforms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e\u003cstrong\u003eBOLT M\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eBOLT M engine, universal fitment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e\u003cstrong\u003eHYDRA Gen 2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eHYDRA Gen 2. Does not include solenoid valve seals — see the MAC kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e\u003cstrong\u003eHAVOC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eHAVOC engine, both 8 BB and 6 BB versions. Updated in 2026 to add the 6 BB track seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e\u003cstrong\u003eHAVOC Gen-12\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eHAVOC HPA engine as fitted to Gen-12 shotguns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e\u003cstrong\u003eSTORM Category 5\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eSTORM Cat5 regulator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e\u003cstrong\u003eMAC Solenoid Valves\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMAC valves across INFERNO, HYDRA, BOLT, REAPER and SMP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e\u003cstrong\u003eREAPER Mechanical Valve\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eREAPER M mechanical valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e\u003cstrong\u003eEvolution Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eGen 1 INFERNO and HYDRA — the older engines still in service\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eGood to know before you buy\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eThe MAC solenoid kit is separate for a reason.\u003c\/strong\u003e The engine kits cover the engine body; solenoid valve seals are a different set. If your leak is at the valve rather than the engine, that is the kit you want — and it covers INFERNO, HYDRA, BOLT, REAPER and SMP from one part.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003eHAVOC universal kit\u003c\/strong\u003e was updated in 2026 to include the additional 6 BB track o-ring, so it now covers both the 8 BB and 6 BB versions.\u003c\/p\u003e\u003cp\u003eWorth keeping the kit for your engine in the toolbox rather than ordering when something fails. At this price it is cheaper than a lost game day.\u003c\/p\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eHow do I know an o-ring has failed?\u003c\/strong\u003e\u003cbr\u003eInconsistent velocity, an engine that will not hold pressure between shots, or noticeably worse air efficiency than you remember. Leaks are often audible if you pressurise the system and listen.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace all of them or just the leaking one?\u003c\/strong\u003e\u003cbr\u003eAll of them. Seals age at the same rate, so replacing one usually means finding the next failure shortly after. The kits exist to do the job properly in one go.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich kit for a Gen 1 INFERNO or HYDRA?\u003c\/strong\u003e\u003cbr\u003eThe Evolution Series kit. Those are the older engines and they use different sizes to the Gen 2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMy HYDRA is leaking at the solenoid, not the body.\u003c\/strong\u003e\u003cbr\u003eThen you want the MAC Solenoid Valves kit. The HYDRA Gen 2 kit deliberately excludes solenoid seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan you service it for me?\u003c\/strong\u003e\u003cbr\u003eYes. We are an HPA tech centre and reseal engines on the bench, including pressure testing before they go back.\u003c\/p\u003e\u003cdiv style=\"background:#fffbe6;border-left:4px solid #f0d060;padding:12px 16px;border-radius:0 6px 6px 0;margin:0 0 16px;font-size:13px;\"\u003e⚠ \u003cstrong\u003eRunning HPA:\u003c\/strong\u003e always fully depressurise before opening an engine or regulator. Feed an engine through a secondary regulator rather than directly off a tank output, and chronograph to your site limit before playing.\u003c\/div\u003e\u003cdiv style=\"background:#1B3A6B;color:#fff;padding:12px 16px;border-radius:6px;margin:18px 0 0;font-size:13px;\"\u003e\n\u003cstrong style=\"color:#fff;\"\u003e💡 Titan Forge Airsoft tip:\u003c\/strong\u003e browse our \u003ca href=\"\/collections\/hpa-spares-upgrade-parts\" style=\"color:#cdd6f4;\"\u003eHPA spares\u003c\/a\u003e and \u003ca href=\"\/collections\/hpa-engines\" style=\"color:#cdd6f4;\"\u003eengine range\u003c\/a\u003e. As an HPA tech centre we reseal and pressure test engines in house — \u003ca href=\"https:\/\/wa.me\/447874452357\" style=\"color:#cdd6f4;\"\u003emessage us on WhatsApp\u003c\/a\u003e if you are not sure which kit you need.\u003c\/div\u003e","brand":"Wolverine Airsoft","offers":[{"title":"BOLT","offer_id":55655913062776,"sku":"1806756774","price":7.95,"currency_code":"GBP","in_stock":true},{"title":"BOLT M","offer_id":55655914013048,"sku":null,"price":7.95,"currency_code":"GBP","in_stock":true},{"title":"HYDRA Gen 2","offer_id":55655914045816,"sku":null,"price":7.95,"currency_code":"GBP","in_stock":true},{"title":"HAVOC","offer_id":55655914078584,"sku":null,"price":7.95,"currency_code":"GBP","in_stock":true},{"title":"HAVOC Gen-12","offer_id":55655914111352,"sku":null,"price":8.95,"currency_code":"GBP","in_stock":true},{"title":"STORM Category 5","offer_id":55655914144120,"sku":null,"price":7.95,"currency_code":"GBP","in_stock":true},{"title":"MAC Solenoid Valves","offer_id":55655914176888,"sku":null,"price":14.95,"currency_code":"GBP","in_stock":true},{"title":"REAPER Mechanical Valve","offer_id":55655914209656,"sku":null,"price":7.95,"currency_code":"GBP","in_stock":true},{"title":"Evolution Series","offer_id":55655914242424,"sku":null,"price":7.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/8097\/3450\/files\/Wolverine_HYDRA_Gen_2_O-Ring_Kit___Titan_Forge_Airsoft.webp?v=1788965386","url":"https:\/\/www.titanforgeairsoft.com\/products\/wolverine-o-ring-service-kits","provider":"Titan Forge Airsoft","version":"1.0","type":"link"}