CO₂‑Resistant O‑Rings

O‑rings guarantee a tight seal between two components to prevent fluid leakage. They are used in static, dynamic, hydraulic, and pneumatic applications operating under very high pressure. Made from premium elastomers (synthetic or natural polymers), sold individually or in kits. Prices depend on material and quantity. PowerRubber offers a comprehensive range of CO₂‑resistant O‑rings; for more information, contact us.

O‑Rings for Carbon Dioxide (CO₂)

What is CO₂?

Carbon dioxide (CO₂) is a colourless, odourless gas that occurs naturally.

CO₂ Effect on O‑Rings

Over time, O‑rings made from softer materials may swell by absorbing gas, leading to internal cracks. PowerRubber supplies CO₂‑resistant O‑rings in polyurethane, PTFE, NBR, and fluoroelastomers.

NBR O‑Rings

NBR O‑rings are considered hard, durable general-purpose seals, suitable from – 50 °C to + 120 °C. NBR (Buna‑N) offers excellent sealing, Shore A hardness 40–90, low gas permeability, abrasion resistance, and resistance to oils, fuels, hydraulic fluids (HSA, HSB, HSC), and silicone greases. Also resistant to oxygen, ozone, and weathering, but limited resistance to glycol‑based brake fluids.

HNBR Seals

Hydrogenated NBR (HNBR) provides high strength, thermal stability, abrasion and ozone resistance, and resilience against acid gases. Chemically resistant to aliphatic hydrocarbons (propane, butane, gasoline), mineral oils, HFA/HFB/HFC fluids, animal/vegetable fats, and diluted acids/bases at moderate temperatures.

PTFE O‑Rings

PTFE is a polymer resistant from – 50 °C to + 260 °C, weather and temperature extremes, with excellent thermal and electrical insulation. PowerRubber offers PTFE (Teflon®) O‑rings impermeable to nearly all liquids and gases.

Fluoroelastomer O‑Rings

Fluoroelastomers (Viton®/FKM/FPM) feature low gas absorption, superior chemical resistance to acids, mineral/vegetable oils, non‑flammable hydraulic fluids, aliphatic, aromatic, and chlorinated hydrocarbons, plus UV and ozone resistance. Temperature range ‑50 °C to +205/230 °C. Available in green, brown, black. Pricing depends on size and quantity.

O‑Rings for CO₂ and HP Bottles

We offer high‑quality O‑rings for CO₂ and high-pressure bottles in 20‑packs, ideal for high-pressure hydraulic and pneumatic applications in home and workshop use.

Use in CO₂ Pistols

12 g CO₂ pistols (Umarex, Walther, Beretta) that require no licence need CO₂-rated O‑rings (e.g., 88 g O‑ring for Umarex Airmagnum 850). Contact us for premium CO₂‑resistant O‑rings – fast delivery guaranteed!