Integral Seal Bolts

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Sealing bolts are a type of fastener designed with an o-ring to provide secure bi-directional protection against contaminates such as gases and fluids in various applications, minimising the risk of damage to sensitive equipment. They prevent the entry of water, dust, or other contaminants, ensuring a secure, reliable connection.

This range of sealing bolts with a hexagonal head, incorporates an O-ring which is compressed, squeezed into a precision groove machined under the head of the bolt, and the mating surface to complete the seal. They are manufactured from stainless steel, which provides good corrosion resistance and is slightly magnetic.

Integral Seal Bolts are used in threaded and non-threaded holes in applications such as pipes, valves or pumps.

Sealing bolts are used in threaded and non-threaded holes in applications such as cabinets or used in the automotive and electric industries.

Please note: Our seal bolts are designed for use in applications where sealing properties are required. It could be confused with standard fasteners, these do not require sealing properties and with an O-ring you will not get a sealing property like you get with seal screws and may damage the ring.

Material: Stainless Steel
AISI 303, 1.4305 or AISI 316, 1.440
Tensile strength: 550 N/mm² or 480N/mm²

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Product SKUs information
Price range	Availability	h1 max	Material	A/F	d1	l1	d2 ±0.05
R 30,2662 - R 46,5635	In production	1.6	303 Stainless Steel	4.0	M2	8.0	2.35

R 35,7692 - R 55,0293	In production	1.6	303 Stainless Steel	4.0	M2	12.0	2.35

R 26,7285 - R 41,1209	In production	2.2	303 Stainless Steel	5.5	M3	8.0	3.6

R 36,5554 - R 56,2388	In production	3.0	303 Stainless Steel	7.0	M4	6.0	4.5

R 39,3069 - R 60,4719	In production	3.0	316 Stainless Steel	7.0	M4	6.0	4.5

R 38,9137 - R 59,8671	In production	3.7	303 Stainless Steel	8.0	M5	8.0	5.6

R 41,272 - R 63,4956	In production	3.0	316 Stainless Steel	7.0	M4	12.0	4.5

R 42,0582 - R 64,7051	31677 In stock - Delivery conditions may apply, visit our FAQs	3.7	316 Stainless Steel	8.0	M5	8.0	5.6

R 40,879 - R 62,8909	In production	3.7	303 Stainless Steel	8.0	M5	16.0	5.6

R 61,7117 - R 94,941	In production	4.2	316 Stainless Steel	10.0	M6	12.0	6.8

R 61,7117 - R 94,941	73 In stock - Delivery conditions may apply, visit our FAQs	4.2	303 Stainless Steel	10.0	M6	25.0	6.8

R 68,0007 - R 104,6166	In production	4.2	316 Stainless Steel	10.0	M6	25.0	6.8

R 71,9314 - R 110,6637	96 In stock - Delivery conditions may apply, visit our FAQs	5.5	303 Stainless Steel	13.0	M8	20.0	8.5

R 93,9431 - R 144,528	In production	5.5	316 Stainless Steel	13.0	M8	30.0	8.5

R 88,2043 - R 135,6991	In production	6.6	303 Stainless Steel	16.0	M10	25.0	10.6

R 90,209 - R 138,7831	In production	7.7	303 Stainless Steel	18.0	M12	20.0	12.85

R 90,209 - R 138,7831	In production	6.6	303 Stainless Steel	16.0	M10	40.0	10.6

R 117,0949 - R 180,146	86 In stock - Delivery conditions may apply, visit our FAQs	7.7	316 Stainless Steel	18.0	M12	20.0	12.85

R 117,0949 - R 180,146	In production	7.7	316 Stainless Steel	18.0	M12	40.0	12.85

R 29,087 - R 44,7492	In production	2.2	316 Stainless Steel	5.5	M3	8.0	3.6