270pieces Assortment Car HNBR A/C System Air Conditioning O Ring Seals SetFeature: Assortment O-Rings with convenient resealable plastic case Total 18 most popular used O-ring Sizes Hydrogenated Nitrile Butadiene Rubber (HNBR), also known as Highly Saturated Nitrile (HSN) is special class of nitrile rubber (NBR) and is for mission critical applications HNBR can be formulated to meet application temperatures ranging between -45 degrees C and 165 degrees C, and HNBR is classified by ASTM as DH-type polymer Material: Rubber Color: Green Size types: 18 sizes (as picture show) Quantity: 1 set (270 pieces) Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, Thank you. Package include: 1 x Set Rubber O RingRefund or Replacement: 1. Please Don't Leave Negative Review or Rise Dispute. 2. If you have any problem with the item when you receive it, Please send us message, we are going to take care of you in 12 hours. We would like to sincerely communicate with you to settle issues together. Shipping: 1. Receiving time = Processing time + Shipping time 2. Processing Time: Around 5-15 Days 3. Shipping Time: 15-26 Days By Air Mail, Free. 3-10 Working Days By Express. Notice: 1. When you place an order, please choose a shipping method and pay for the order including the shipping fee. And please make sure your current address correct after your payment within 1-2 days! 2. We do not guarantee delivery time on all international shipments due to differences in customs clearing times in individual countries, which may affect how quickly your product is inspected! Our Guarantee: If you are not 100% satisfied with the quality of the products you purchased, you can return or exchange your items within 30 days from the delivered date. Request: 1. Items received within 30 days from the delivered date. 2. Items received unused, undamaged and in original package. 3. Return shipping fee is paid by buyer. Feedback: 1. Your feedback is very important to us and all buyers. Please take a few seconds to leave a great feedback if you are satisfied with our product and service. 2. Please contact us before leaving neutral(3 stars) or negative(1-2 stars) feedback. We will try our best to solve the problem and leave you a happy shopping here. Thank you! Contact Us: 1. If you have any questions or need any help, please feel free to contact us! Thank you! 2. We do try respond as quickly as possible. We will be glad to answer any question you have Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.