Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 16 - Jun 21
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Description
450 312 050 R21/SC Single Lip Nitrile Rotary Shaft Oil Seal with Garter Spring 3.1/8x4.1/2x1/2 InchSeals are ideal for excluding dirt, dust, water or any other contaminant whilst retaining lubricant in rotary shaft equipment. They are generally used as a means of protecting the bearings of rotating shafts. The term nitrile rubber is used for acrylonitrile butadiene rubber (NBR). This material has very good engineering properties and is a general purpose sealing lip material. It is a copolymer manufactured from acrylonitrile and butadiene that
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.2 ★★★★★
Based on 1893 reviews
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Product Reviews
★★★★★ 5
Great socks!
Size: Medium, Color: Black
I love these socks. Very soft and comfortable.
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Reviewed in the United States on February 21, 2026
★★★★★ 5
Good socks
Size: Medium, Color: Black
Socks wear reasonably well. They are comfortable.
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Reviewed in the United States on February 4, 2026
★★★★★ 5
Very comfy
Size: X-Large, Color: White
I'm a size US Mens 14 with huge calves. Finding comfortable crew socks can be somewhat difficult.
These are extremely comfortable, very stretchy and soft. Very worth the price.
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Reviewed in the United States on November 4, 2025
★★★★★ 5
I use these exclusively for when I'm hiking, cycling and walking ( exercising )
Size: X-Large, Color: Black
5.7.2019 Update:
I have probably five packs of 3 of these socks. Can't explain it but recent pairs I've been using have lasted longer than previous two packs ( 6 socks )... So I'm going to get some more...
They are my #1 go to sock for cycling, hiking, climbing, walking ( serious, training, speed, distance )...
10.30.19:
I use these exclusively for when I'm hiking, cycling anqd walking ( exeqrcising )...
They are light, comfortable, keep feet dry, cool & comfortable... They don't shift around on feet. They stay put once put on and running, climbing or cycling shoes are put on and laced up or ratched...
I do a lot of hill climbing and also use on terrain where there's lots of long periods ( hours ) going up & hours going down...
They don't appear to be very durable, get holes in toe or holes in heels, but 3 pack is relatively inexpensive so I continue to buy them.
I do not use them for everyday casual wear because they would wear out very quickly compared to other similar sockets...
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Reviewed in the United States on October 30, 2018
★★★★★ 4
These socks are just OK. One arrived with a ...
These socks are just OK. One arrived with a hole (easily sewn up, but kind of bummed about that). I prefer the Under Armour Resistor socks - they have support built into the socks that you actually can feel, and they were same price for 6 pairs!
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Reviewed in the United States on March 2, 2017
