![]() ![]() Will my items be sent in one package?įor logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us. My tracking says “no information available at the moment”.įor some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If you haven’t received tracking info within 5 days, please contact us. ![]() Yes, you will receive an email once your order ships that contains your tracking information. *This doesn’t include our 2-5 day processing time. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country. We are not responsible for any custom fees once the items have been shipped. If you happen to be located in one of those countries we will contact you. However, there are some locations we are unable to ship to. We provide free shipping to over 200 countries around the world. Packages shipped from our US warehouse are shipped through USPS. Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world. Nothing means more to us than bringing our customers great value and service. All sizes in millimetres.įor o-rings with internal diameters between 54 and 600 visit O-Ring Tolerances 54.We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. ![]() Polymax o rings are manufactured according to ISO-3601-1 tolerance as listed in the table below. Low elasticity (memory), making it unsuitable for dynamic applications unless energised by suitable material (I.E. ![]() Can be use in food, chemical and medical industries (among others).Not subject to ageing, so a near infinite shelf / storage life.Excellent resistance to almost all chemicals.Recommended temperature range -60☌ to +230☌ Chemical resistance This can be a disadvantage if under permanent strain and may not create the best lasting seal. PTFE O-rings could be a more economical alternative to FFKM materials, but they are not easily compressed and have little memory to be able to return to their original form. For this reason, it is the O-ring of choice for use in aerospace, food, pharmaceuticals and telecommunications industries. It also possesses outstanding weather, ozone and electrical resistance. It is tough, abrasion resistant and capable of withstanding temperatures between -200☌ to +250☌. PTFE is a highly resilient O-ring material unaffected by virtually all known acids, alkalis and solvents. Mineral oil products (oils, greases and fuels).Many polar solvents (alcohols, ketones, esters).Phosphate-ester based hydraulic fluids (HFD-R).Glycol based brake fluids (Dot 3 & 4) and silicone-based brake fluids (Dot 5) up to 149☌.Hot water and steam up to 149☌ with special compounds up to 260☌.Recommended temperature range -20☌ to 120☌ Chemical resistance Standard EPDM up to 120☌ (Intermittant).Please contact us for further information. Polymax peroxide cured EPDM O-rings have a series of approvals including ACS, WRAS, KTW, EN 681-1. EPDM is particularly useful when sealing in brake systems that use fluids having a glycol (Dot 3 and 4) or silicone base (Dot 5). General purpose EPDM O-rings are manufactured using a sulphur based curing system, these are suitable for use up to +120☌ whereas peroxide cured O-rings manufactured from EPDM exhibit an excellent resistance to weathering and ozone, water and steam. Low molecular weight organic acids (formic and acetic acids)ĮPDM rubber is a terpolymer of ethylene, propylene and diene monomers.Very good ozone, weather and aging resistance.Gasoline (including high alcohol content).Chlorinated hydrocarbons (trichloroethylene and carbon tetrachloride).Aromatic hydrocarbons (benzene, toluene).Aliphatic hydrocarbons (butane, propane, natural gas).Recommended temperature range -10☌ to +180☌ Chemical resistance Polymax is also able to supply specially compounded FKM O-rings meeting Norsok M710, FDA, USP Class VI, UL94 V0, EN549, Viton® A, B, G, GF, GLT, GFLT, ETP standards on special request. These designations stand for one single base material: fluorocarbon rubber. The terms FPM, FKM and Viton® can lead to incorrect interpretations. Although generally more expensive than NBR (Nitrile) O-rings, FKM has found wide acceptance in the aircraft, automotive and chemical industries. FKM (Viton®) O-rings have excellent chemical resistance and can be used at temperature range of between 15☌ and 200☌. ![]()
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