Lamons Sterling Seal And Supply (Stcc) Orsil275 Number-275 Standard, 3/4" Od Product Details Sterling Seal Supply Silicone O-Rings are excellent seal materials for extreme temperature in static applications. Outstanding flex and fatigue life, very good for ozone and UV radiation, insulating properties, and physiologically neutral. ORSIL275 Silicone O-Ring, service temperature is -90 F to 500 F (-68 C to 260 C) Sterling Seal Supply Silicone O-Ring, has excellent heat and compression resistance, excellent flexibility, and good electrical insulator Silicone O-Ring, has good resistance to fungal and biological attack At high temperatures, Silicone O-Rings are superior to most other elastic materials Silicone has limitations, Aromatic Hydrocarbons (benzene, toluene), aromatic mineral oil, acids and alkalis, superheated water or steam over 250 F Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.