{"product_id":"4-weco-hammer-union-seal-brass-insert-buna-n-heavy-duty-anti-extrusion-seal-ring","title":"4\" Weco Hammer Union Seal (Brass Insert \u0026 Buna-N) | Heavy-Duty Anti-Extrusion Seal Ring","description":"\u003cp data-path-to-node=\"4\"\u003eThe 4\" Weco Hammer Union Seal featuring a precision-machined Brass insert and Buna-N (Nitrile) elastomer is a highly robust sealing solution engineered specifically for extra-large-bore, high-volume flowline applications. Designed to fit seamlessly into standard 4-inch Weco-style hammer unions—including standard Figure 1002, 1502, and 602 profiles—this heavy-duty composite seal ring provides critical protection against fluid bypass and catastrophic blowout in operations requiring massive fluid transfer rates.\u003c\/p\u003e\n\u003cp data-path-to-node=\"5\"\u003eThe core sealing element is molded from high-grade \u003cb data-path-to-node=\"5\" data-index-in-node=\"51\"\u003eBuna-N (Nitrile \/ NBR)\u003c\/b\u003e, delivering dependable, standard-service resistance to petroleum-based fluids, water, and abrasive drilling muds. The defining feature of this seal is its integrated, rigid \u003cb data-path-to-node=\"5\" data-index-in-node=\"247\"\u003eBrass Anti-Extrusion Ring\u003c\/b\u003e. In 4-inch flowlines, the surface area exposed to internal pressure is significantly larger, magnifying the risk of elastomer extrusion. During extreme pressure spikes and high-velocity fluid transfers, this non-sparking metallic backup ring structurally reinforces the elastomer lip, completely preventing it from extruding into the clearance gap of the union.\u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003eIdeal for operators seeking maximum reliability in their largest flowline setups, this 4\" Brass\/Buna Weco seal provides the essential extrusion resistance required for safe, high-capacity cementing, circulating, and fluid transfer 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\"\u003eBrass Anti-Extrusion Ring:\u003c\/b\u003e Integrated metal backing prevents elastomer extrusion and blowout under the severe pressure surges and massive fluid volumes typical of 4-inch lines.\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\"\u003ePremium Buna-N Elastomer:\u003c\/b\u003e Formulated from high-quality Nitrile rubber for dependable resistance to oil, gas, water, and abrasive fracturing or drilling fluids.\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\"\u003eLarge-Bore Reliability:\u003c\/b\u003e Specifically engineered to handle the increased radial forces and flow velocities present in extra-large 4-inch flow control systems.\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 internal line pressure to actively expand the sealing lips against the union's mating surfaces, establishing a dynamic barrier that strengthens as pressure increases.\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 Precision manufactured to ensure a perfect, drop-in fit for standard 4\" Weco-style hammer unions, allowing for rapid in-field replacements without downtime.\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 with Anti-Extrusion 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\"\u003e4 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\"\u003eElastomer Material\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,3,1,0\"\u003eBuna-N (Nitrile \/ NBR)\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\"\u003eInsert Material\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,1,0\"\u003eMachined Brass (Anti-Extrusion Ring)\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\"\u003eHigh-Pressure Standard Service, High-Volume Fluid Transfer\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 250°F (-29°C to 121°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\"\u003e4\" Weco-Style Hammer Unions (e.g., Fig 602, 1002, 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\"\u003eThis 4\" Brass\/Buna Weco Seal is recommended for standard service, large-diameter flowline environments where high flow volumes and structural integrity are critical. Typical applications include high-capacity mud circulating lines, heavy-duty cementing manifolds, large-scale water transfer lines, pump suction\/discharge lines, and general well-servicing equipment requiring robust blowout protection.\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\"\u003eThese extra-large bore seals are subjected to strict quality control protocols. We meticulously verify the Buna-N durometer (hardness) and dimensionally inspect the brass anti-extrusion rings to ensure they meet the rigorous tolerance standards necessary to protect your field personnel and large-scale flowline infrastructure.\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":48459992039669,"sku":"SEAL4BR","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/5785\/1637\/files\/4_Weco_Seal_-_Brass_Insert_Buna-N_Large_Bore_Hammer_Union_Seal.png?v=1784755503","url":"https:\/\/blazess.com\/de\/products\/4-weco-hammer-union-seal-brass-insert-buna-n-heavy-duty-anti-extrusion-seal-ring","provider":"Blaze Sales \u0026 Service","version":"1.0","type":"link"}