{"product_id":"smith-wesson-78g-79g-co2-pistol-seal-reseal-repair-o-ring-kit-22-cal-177-cal","title":"Smith \u0026 Wesson 78G 79G CO2 Pistol Seal Reseal Repair O-Ring Kit .22 cal .177 cal","description":"\u003cp class=\"p1\"\u003eThis O-Ring Seal Kit is specifically designed for the Smith \u0026amp; Wesson 78G (.22 cal) and 79G (.177 cal) CO2 pistols, providing everything you need to keep your pistol in top working condition. The kit includes a full set of seven high-quality O-rings to replace the most commonly used seals, making it ideal for re-sealing one or even two pistols.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIncluded in the kit are:\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePiercing Body\/Gas Cap Seals\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e(White Urethane O-Ring): These premium urethane seals are known for their durability and high-quality performance in CO2 tube cap applications.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePiercing Pin Seals\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e(O-Ring)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eValve Body Plug Seals\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e(O-Ring)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eValve Connector\/Transfer Port Seals\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e(O-Ring)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eBreech Bolt\/Probe Seals\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e(O-Ring) – The smaller size is for the 79G, and the larger one is for the 78G.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis kit is the perfect solution to restore your pistols’ functionality, ensuring proper seals in all critical areas. Additionally, a printed copy of an exploded view and parts list is included, showing seal locations and part numbers for easy identification during installation.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIf you have any questions or need assistance, feel free to reach out.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eExploded Diagram\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003ca href=\"https:\/\/www.jgairguns.biz\/pdf\/SW78-79c1972small.gif\"\u003ehttps:\/\/www.jgairguns.biz\/pdf\/SW78-79c1972small.gif\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eChanging the O-Ring seals on a Smith \u0026amp; Wesson 78G is a straightforward process, but it requires a little care to ensure everything is done properly. Here’s a step-by-step guide on how to replace the O-Rings in your 78G CO2 pistol:\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eTools and Materials You’ll Need:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eReplacement O-Ring seal kit\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eSmall flathead screwdriver (for gently prying out old O-Rings)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eLubricant (preferably silicone-based, to lubricate the new O-Rings)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eA clean work surface (to avoid losing small parts)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eStep-by-Step Instructions:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e1. Ensure Safety\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eMake sure your 78G pistol is\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eunloaded\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cb\u003edepressurized\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e(remove any CO2 cartridge if still in the chamber).\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eClear the gun of any ammunition, and ensure the barrel is not obstructed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e2. Disassemble the Pistol\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eRemove the grips\u003c\/b\u003e: Use a small screwdriver or your hands to unscrew and remove the grips. This will give you access to the internal parts.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eRemove the CO2 tube\u003c\/b\u003e: Unscrew the CO2 cartridge cap from the piercing assembly and remove the empty cartridge. Then, carefully unscrew the gas tube from the frame if necessary.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e3. Locate the Seals\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eThe O-Rings on the 78G are located in several parts:\u003c\/li\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePiercing Body\/Gas Cap\u003c\/b\u003e: The white urethane seal in the gas tube cap.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePiercing Pin\u003c\/b\u003e: The O-Ring seal around the piercing pin.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eValve Body Plug\u003c\/b\u003e: The O-Ring seal in the valve body.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eValve Connector\/Transfer Port\u003c\/b\u003e: The O-Rings around the valve connector.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eBreech Bolt\/Probe\u003c\/b\u003e: The O-Rings on the breech bolt, one for the .22 cal (larger) and one for the .177 cal (smaller).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e4. Remove the Old O-Rings\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePiercing Body\/Gas Cap Seal\u003c\/b\u003e: Use a small flathead screwdriver to carefully pry out the old white urethane O-Ring from the CO2 piercing cap.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePiercing Pin Seal\u003c\/b\u003e: Gently remove the O-Ring around the piercing pin. It may need to be worked out carefully.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eValve Body Plug Seal\u003c\/b\u003e: Take out the old O-Ring seal located at the valve body plug.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eValve Connector\/Transfer Port Seals\u003c\/b\u003e: These seals may be a bit tricky, but use a small pick or flathead screwdriver to remove them.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eBreech Bolt\/Probe Seals\u003c\/b\u003e: There will be two of these (one for the .22 and one for the .177). Gently remove both.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e5. Clean the Parts\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eClean the parts you’re working with to remove any old lubricant, dirt, or debris. Use a clean cloth or paper towel and some mild solvent or soap and water. Make sure everything is dry before proceeding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e6. Lubricate the New O-Rings\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eLightly lubricate the new O-Rings with silicone grease. This ensures a proper seal and prevents damage to the O-Rings during installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e7. Install the New O-Rings\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePiercing Body\/Gas Cap Seal\u003c\/b\u003e: Place the new white urethane O-Ring into the CO2 gas cap. Ensure it sits properly in the groove.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePiercing Pin Seal\u003c\/b\u003e: Slide the new O-Ring onto the piercing pin, making sure it’s seated evenly.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eValve Body Plug Seal\u003c\/b\u003e: Insert the new O-Ring into the valve body plug area.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eValve Connector\/Transfer Port Seals\u003c\/b\u003e: Carefully fit the new O-Rings onto the valve connectors and transfer ports.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eBreech Bolt\/Probe Seals\u003c\/b\u003e: Install the correct O-Ring (larger for .22, smaller for .177) onto the breech bolt or probe.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e8. Reassemble the Pistol\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eOnce all O-Rings are in place, reverse the disassembly steps:\u003c\/li\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eReinstall the valve body plug, valve connector, and CO2 tube.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eTighten all screws and reattach the grips.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eDouble-check everything is securely fastened.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e9. Test the Pistol\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eInsert a new CO2 cartridge and tighten the piercing assembly.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003eTest the function of the gun to make sure there are no leaks and everything is working smoothly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e10. Final Check\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cspan class=\"Apple-tab-span\"\u003e \u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\"\u003e \u003c\/span\u003e\u003cspan class=\"Apple-tab-span\"\u003e \u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\"\u003e \u003c\/span\u003e\u003c\/span\u003eAfter testing, check for leaks around the O-Rings (especially the CO2 seal and valve areas). If any leaks are found, make sure the O-Rings are seated correctly, and that they’re properly lubricated.\u003c\/p\u003e","brand":"The Frugal Fixer","offers":[{"title":"Default Title","offer_id":53189476909421,"sku":null,"price":7.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/3362\/8525\/files\/Screenshot2026-04-09at3.50.25PM.png?v=1775775101","url":"https:\/\/thefrugalfixer.com\/products\/smith-wesson-78g-79g-co2-pistol-seal-reseal-repair-o-ring-kit-22-cal-177-cal","provider":"The Frugal Fixer","version":"1.0","type":"link"}