Greene Tweed 提供多種O型圈(O-ring)，專門用於極端環境，尤其是航太、半導體、能源和工業應用。其O型圈具備優異的耐高溫、抗化學和抗機械磨損性能。主要產品包括：

1. 全氟彈性體O型圈(O-ring)（Chemraz®）：適用於苛刻化學環境中的高性能密封，常用於半導體和石化行業。
2. 氟橡膠O型圈(O-ring)（Fusion®）：具備出色的化學耐性和高溫耐受性，適用於航太和汽車工業。
3. 備用環：(O-ring) 與O型圈配合使用，防止擠壓並在高壓下增強密封性能。

這些O型圈可使用不同材料，如FKM、FFKM等，適用於廣泛的應用場景，提供靈活的解決方案。

• Viton O型環
  FKM 706: High Purity Fluoroelastomer
  FKM 742: High-Performance Fluoroelastomer

• Chemraz (全氟橡膠FFKM)
  513: Universal Compound
  520: Withstands High Loads
  543: Universal Compound
  547: Exceptional Fluorine Plasma Resistance
  550: Carbon-Loaded Compound
  551: Chemical Resistance at High Temperatures
  570: Very Low Contaminants
  571: Durable in Wet Applications
  592: High Strength & Purity
  629: Resists Aggressive Plasmas
  639: Enhanced Plasma Resistance
  640: Excellent Fluorine & Oxygen Resistance
  653: High Temperature, Carbon-Loaded Compound
  655: High Temperature, White Compound
  656: Low Metallic Ion Content
  657: Minimal Particulation in Dry Etch
  E38: Minimal Contamination in Dry Plasma
  SubFab
  XCD: Superior Thermal Resistance
  XPE-HP: Provides Superior O2, Ozone, and UV
  XPE: O2 Plasma Resistance
  XRZ: Corrosion Resistance
  XTR: Exceptional Performance in ClF3 Environments