Our warehouse is tremendous. Therefor it takes time to pick and pack each o-ring.
Given the low prices that we charge, we need to factor our warehouse time/cost in the order. We do not want to raise our prices and we don't want to add a surcharge to each possition. Therefor we decided that we prefer to give you more value for money by giving you more o-rings instead. We hope you understand and appreciate this.
This NBR - Nitrile O-Ring is 439x3.5mm and in the color Black. The Hardness of this O-ring 439x3.5 - NBR - Nitrile - 70 Shore A - Black - ORS135170 is 70 Shore A.The alternative names of the compound are Nitrile Rubber - NBR and they are mostly produced by Lanxess - Zeon - and LG Chem. The O-ring is commonly used in and has an operating temperature range from -30 ºC to 135 ºC. O-rings 50997 are indicated as 135170 and have a DIN 3771 Size of 439x3.5. This item is equal to and has an None Approval. The chemical name of this Oring is Acrylonitrile butadiene rubber.