{"product_id":"3-weco-hammer-union-seal-viton-black-high-temp-sour-service-elastomer","title":"3\" Weco Hammer Union Seal (Viton \/ Black) | High-Temp \u0026 Sour Service Elastomer","description":"\u003cp data-path-to-node=\"4\"\u003eThe 3\" Weco Hammer Union Seal manufactured from premium Black Viton® (FKM) is a heavy-duty, high-performance sealing solution designed for large-bore flowline environments that demand exceptional chemical and thermal resilience. Engineered for a precise, drop-in fit into standard 3-inch Weco-style hammer unions, including the widely used Figure 1502, this specialized elastomer ring provides an impenetrable pressure barrier against volatile and corrosive fluids in severe-service applications.\u003c\/p\u003e\n\u003cp data-path-to-node=\"5\"\u003eWhile molded in the industry's standard black color—often visually identical to standard Buna-N seals—this component is constructed entirely from elite \u003cb data-path-to-node=\"5\" data-index-in-node=\"152\"\u003eViton® (Fluorocarbon \/ FKM)\u003c\/b\u003e. It is specifically intended for operators who require the unparalleled chemical and high-temperature resistance of FKM but prefer or require a standard black elastomer for their inventory systems. This seal provides maximum defense against elevated temperatures, synthetic drilling muds, sour gas (H2S), and aggressive completion chemicals that would quickly destroy standard rubber compounds.\u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003eFeaturing a highly efficient, pressure-energized lip design, the seal actively expands against the union’s mating surfaces as internal line pressure increases. This dynamic action guarantees a tight, blowout-proof connection under the severe vibrations and high fluid velocities typical of 3-inch, high-capacity well-servicing operations.\u003c\/p\u003e\n\u003cp data-path-to-node=\"7\"\u003e\u003cb data-path-to-node=\"7\" data-index-in-node=\"0\"\u003eFeatures \u0026amp; Benefits\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,0,0\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003ePremium Viton® (FKM) Elastomer:\u003c\/b\u003e Delivers maximum resistance to high temperatures, volatile petrochemicals, and aggressive stimulation fluids.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eStandard Black Finish:\u003c\/b\u003e Ideal for facilities standardizing on black elastomers while still requiring top-tier FKM performance for severe service.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003eSour Service Ready:\u003c\/b\u003e Specifically formulated to withstand the degrading and embrittling effects of hydrogen sulfide (H2S), ensuring safe operation in sour gas environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,3,0\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003ePressure-Energized Geometry:\u003c\/b\u003e Utilizes high-volume internal flowline pressure to actively push the sealing lips outward against the metal union faces, strengthening the dynamic seal as pressure surges.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,4,0\"\u003e\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003eExact Fitment:\u003c\/b\u003e Manufactured to rigorous dimensional tolerances for a seamless, zero-clearance fit in standard 3\" Weco-style hammer unions (specifically Fig 1502 profiles).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"9\"\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"0\"\u003eSpecifications \u0026amp; Technical Details\u003c\/b\u003e\u003c\/p\u003e\n\u003ctable data-path-to-node=\"10\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,1,0,0\"\u003e\u003cb data-path-to-node=\"10,1,0,0\" data-index-in-node=\"0\"\u003eComponent Type\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,1,1,0\"\u003eHammer Union Seal \/ Lip Seal Ring\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,2,0,0\"\u003e\u003cb data-path-to-node=\"10,2,0,0\" data-index-in-node=\"0\"\u003eNominal Size\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,2,1,0\"\u003e3 Inch\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,3,0,0\"\u003e\u003cb data-path-to-node=\"10,3,0,0\" data-index-in-node=\"0\"\u003eMaterial\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,3,1,0\"\u003eViton® (FKM \/ Fluorocarbon)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,0,0\"\u003e\u003cb data-path-to-node=\"10,4,0,0\" data-index-in-node=\"0\"\u003eColor ID\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,1,0\"\u003eBlack\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,5,0,0\"\u003e\u003cb data-path-to-node=\"10,5,0,0\" data-index-in-node=\"0\"\u003eService Application\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,5,1,0\"\u003eSour Service (H2S), High-Temperature, Corrosive Fluids, Large Bore\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,6,0,0\"\u003e\u003cb data-path-to-node=\"10,6,0,0\" data-index-in-node=\"0\"\u003eOperating Temperature Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,6,1,0\"\u003e-20°F to 400°F (-29°C to 204°C)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,7,0,0\"\u003e\u003cb data-path-to-node=\"10,7,0,0\" data-index-in-node=\"0\"\u003eCompatibility\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,7,1,0\"\u003e3\" Weco-Style Hammer Unions (Fig 1502)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-path-to-node=\"11\"\u003e\u003cb data-path-to-node=\"11\" data-index-in-node=\"0\"\u003eApplications\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"11\"\u003eThe 3\" Black Viton Weco Seal is engineered for severe-service, large-bore flowline systems. It is critical for high-capacity sour gas (H2S) well servicing, high-temperature pump discharge lines, acidizing manifolds, severe-duty fracturing operations, and any critical infrastructure where maximum chemical and thermal resistance is required without the need for specialized color-coding.\u003c\/p\u003e\n\u003cp data-path-to-node=\"12\"\u003e\u003cb data-path-to-node=\"12\" data-index-in-node=\"0\"\u003eQuality Assurance\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"12\"\u003eEvery batch of our large-bore Black Viton union seals undergoes rigorous quality control testing to verify precise dimensional accuracy, correct durometer (hardness), and proper FKM chemical composition. This ensures reliable, long-lasting performance and maximizes field safety during high-stress operations.\u003c\/p\u003e\n\u003cp data-path-to-node=\"13\"\u003e\u003cb data-path-to-node=\"13\" data-index-in-node=\"0\"\u003eRequest a Quote\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"13\"\u003e📞 +1 405 666 5011\u003c\/p\u003e\n\u003cp data-path-to-node=\"13\"\u003e📧 seo@blazess.com\u003c\/p\u003e","brand":"Blaze Sales \u0026 Service","offers":[{"title":"Default Title","offer_id":48459864572149,"sku":"SEAL3VBL","price":12.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/5785\/1637\/files\/3_Weco_Seal_-_Black_Viton_FKM_Sour_Service_Hammer_Union_Seal.png?v=1784874524","url":"https:\/\/blazess.com\/hi\/products\/3-weco-hammer-union-seal-viton-black-high-temp-sour-service-elastomer","provider":"Blaze Sales \u0026 Service","version":"1.0","type":"link"}