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O, X, D – RINGS

O, D a X-RINGS

O-rings, X-rings, D-rings and sealing cords form a comprehensive range of elastomeric seals with circular or profiled cross-sections. They are used to seal both static and dynamic joints in fittings, cylinders, valves, and hydraulic and pneumatic systems. Our range includes over 6,000 sizes in NBR, FPM (Viton), EPDM, MVQ (silicone), HNBR and PTFE.

What this category contains

  • O-rings — the most widely used seals with a circular cross-section, over 6,000 sizes ranging from 0.74 mm to 1,200 mm inner diameter
  • X-rings (Quad-rings) — four-lipped seals with lower friction and better stability in the groove for dynamic applications
  • D-rings — a flat-based profile for static sealing without slipping in the groove
  • Circular profile sealing cords — cut to size for non-standard dimensions, custom O-ring production by joining the ends
  • O-ring sets — diverse ranges for servicing and repairs

How to choose the correct size and material

Ring dimensions are specified using two parameters: inner diameter d1 × cross-sectional diameter d2 (e.g. 12.00 × 2.50 mm). For static sealing, NBR 70 Shore A is usually sufficient (universal for oils, water, air, -30 to +100 °C). For higher temperatures, oils, fuels or aggressive chemicals, choose FPM (Viton, up to +200 °C). For hot steam, food contact or ozone environments, EPDM or MVQ silicone is suitable. For chemically extreme applications, use PTFE.

Why buy from us

Stock of over 6,000 sizes, dispatch within 24 hours, custom production of non-standard sizes from cord. We can advise on the choice of material, hardness and size — just call ☎ 270 003 620.

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