{"id":4170,"date":"2025-06-30T02:09:08","date_gmt":"2025-06-30T09:09:08","guid":{"rendered":"https:\/\/guxiangjs.com\/?post_type=product&p=4170"},"modified":"2025-06-30T02:09:08","modified_gmt":"2025-06-30T09:09:08","slug":"pure-din7603-copper-ring-seals-and-gaskets","status":"publish","type":"product","link":"https:\/\/guxiangjs.com\/zh\/shop\/pure-din7603-copper-ring-seals-and-gaskets\/","title":{"rendered":"Pure DIN7603 Copper Ring Seals and Gaskets"},"content":{"rendered":"
    \n
  1. Superior Metal-to-Metal Sealing Performance
    \n\u2022 Produced from \u2265 99.9 % oxygen-free copper and annealed to 45 \u00b1 5 HV, the rings conform under bolt torque to fill micro-irregularities and create a pressure-tight, blow-out-proof seal without additional compounds.
    \n\u2022 Fully compliant with DIN 7603 tolerances in Types A (flat), B (bevel), and C (crimped) for thread diameters M4\u2013M60; helium-leak tests show leakage rates below 1 \u00d7 10\u207b\u2079 mbar \u00b7 L \/ s at 100 bar.
    \n\u2022 Copper\u2019s 400 \u00b0C service limit, 385 W \/ m\u00b7K thermal conductivity, and low galvanic potential make the gasket ideal for high-temperature, cyclic, or conductive joints where aluminium or elastomer seals fail.
    \n\u2022 Endurance cycling to 1 000 thermal shocks between \u221250 \u00b0C and +250 \u00b0C demonstrates > 95 % retention of initial tightening torque and no evidence of creep relaxation.<\/li>\n
  2. Broad, Cross-Industry Application Spectrum
    \n\u2022 Fluid Power & Hydraulics: Seals banjo bolts, DIN 7421 hollow screws, and tube fittings in pumps, cylinders, and braking systems up to 400 bar.
    \n\u2022 Engines, Turbomachinery & Compressors: Prevents oil, fuel, and coolant leakage at drain plugs, manifold unions, and sensor ports exposed to pulsating pressure and heat soak.
    \n\u2022 Chemical Processing & Cryogenics: Provides metal-only sealing on instrumentation tappings, sampling valves, and vacuum flanges, eliminating elastomer contamination risks.
    \n\u2022 Electronics & Renewable-Energy Equipment: Maintains EMI-shielded, gas-tight joints in liquid-cooled power converters, battery housings, and superconducting busbars.<\/li>\n
  3. Installer-Friendly, Time-Saving Handling
    \n\u2022 One-piece, crush-seal design requires no preforming or adhesive\u2014simply align the ring, tighten to the standard torque, and the copper flows to form a custom gasket in situ.
    \n\u2022 Soft-annealed metallurgy allows minor reuse after retorque when joint surfaces remain undamaged, reducing spare-parts inventory during field service.
    \n\u2022 Consistent wall thickness (\u00b1 0.05 mm) and deburred edges enable smooth automated feeding through vibratory bowls and pick-and-place arms on high-volume assembly lines.
    \n\u2022 Metric size code is laser-etched on the outer rim for quick visual verification, cutting sorting time in multi-diameter kits.<\/li>\n
  4. Certified Quality & Long-Term Durability
    \n\u2022 100 % dimensional and hardness inspection with Cp\/Cpk \u2265 1.67 for inner diameter, thickness, and concentricity ensures interchangeability across global standards.
    \n\u2022 Material certificates document chemical composition to EN 1652 and residual phosphorus < 0.025 %, guaranteeing excellent brazability and low hydrogen embrittlement risk.
    \n\u2022 Each production lot undergoes 20-cycle pressure-pulse testing from 0 to 400 bar as well as 96 h salt-spray exposure with < 5 mg\/cm\u00b2 mass loss, verifying corrosion resistance in harsh environments.
    \n\u2022 Traceability is maintained via QR-coded packaging linking melt number, annealing batch, and test reports, giving engineers full transparency for aerospace, medical, and critical-infrastructure projects.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

    Superior Metal-to-Metal Sealing Performance \u2022 Produced from \u2265 99.9 % oxygen-free copper and annealed to 45 \u00b1 5 HV, the rings conform under bolt torque to fill micro-irregularities and create a pressure-tight, blow-out-proof seal without additional compounds. \u2022 Fully compliant with DIN 7603 tolerances in Types A (flat), B (bevel), and C (crimped) for thread […]<\/p>","protected":false},"featured_media":4171,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[176],"product_tag":[],"class_list":{"0":"post-4170","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-washer","8":"first","9":"instock","10":"taxable","11":"shipping-taxable","12":"purchasable","13":"product-type-variable"},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product\/4170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/comments?post=4170"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/media\/4171"}],"wp:attachment":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/media?parent=4170"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_brand?post=4170"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_cat?post=4170"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_tag?post=4170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}