Threaded O-ring Plugs for NS and NF Threads include a compressed flange lip and an O-ring (optional) to provide a watertight seal and superior leakage prevention for hydraulic threads. The threaded O-ring keeps contaminants like dirt, dust, debris, and moisture out of the hole.
It may be installed using a hex wrench, screwdriver, or hand. Fits standard NS (National Special) and NF (National Fine) Class 1-2-3 threads. Used in oil and gas, plumbing, and automotive sectors where leak-proof seals are crucial to system integrity.
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Use the filters or search below to find what you're looking for
Price range | Availability | Compatible Thread Sizes (All) | View | |
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$0.5997 - $7.9247 | Request the lead time here |
9/16-18
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$1.2102 - $16.0085 | 3781 In stock |
1-14
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$0.8198 - $10.854 | 4250 In stock |
5/8-18
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$0.8426 - $11.1264 | 1700 In stock |
3/4-16
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$0.9788 - $12.9431 | 9500 In stock |
7/16-20
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$0.9653 - $12.7616 | 1068 In stock |
7/8-14
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