HTMS - High Tech Metal Seals on line

Metal C Ring for Axial Pressure

The radial C Ring for axial pressure is designed to seal shaft to bore. Close tolerances on both shaft and bore are required.

Range

Groove dimensions

Seal dimension

BD		SD		WG	R	DS		MT	DSO
Bore diameter range	Tol. on BD +	Shaft dia. = BD-	Tol. on SD -	Groove Width (min)	Radius (max.)	Radial section code	Mat. code	Material thickness	Bore +	Shaft +	Tol. DSO and DSI
12,70-38	0,03	3,12	0,03	1,3	0,38	1,57	M	0,15	0,08	3,28	+/- 0,03
38,01-45	0,03	3,07	0,03	1,3	0,38	1,57	M	0,15	0,10	3,28	+/- 0,03
30,00-38	0,03	4,7	0,03	1,98	0,51	2,39	M	0,25	0,08	4,85	+/- 0,03
38,01-85	0,03	4,65	0,03	1,98	0,51	2,39	M	0,25	0,10	4,85	+/- 0,03
50,00-85	0,03	6,25	0,03	2,64	0,76	3,18	M	0,38	0,10	6,45	+/- 0,03
85,01-150	0,05	6,16	0,05	2,64	0,76	3,18	M	0,38	0,15	6,45	+/- 0,05
150,01-200	0,05	6,05	0,05	2,64	0,76	3,18	M	0,38	0,20	6,45	+/- 0,05
85,00-150	0,05	7,72	0,05	3,28	1,27	3,96	M	0,38	0,15	8,03	+/- 0,05
150,01-250	0,05	7,62	0,05	3,28	1,27	3,96	M	0,41	0,20	8,03	+/- 0,05
100,00-150	0,05	9,32	0,05	3,96	1,27	4,78	M	0,51	0,15	9,63	+/- 0,05
150,01-300	0,05	9,22	0,05	3,96	1,27	4,78	M	0,51	0,20	9,63	+/- 0,05
150,00-300	0,05	12,4	0,05	5,28	1,52	6,35	M	0,64	0,20	12,8	+/- 0,05

Bore/Shaft concentricity: for bore < 85 mm; 0,015 mm. For bore >85 mm; 0,03 mm.
Leading edge, shaft and bore side required.

Example: CA - 008715 - 3.18M - 2/0 - 1 - C50

CA	Seal Type CA: Axial pressure, system pressure energised CSA: Axial pressure with additional energising spring

008715

Seal Diameter (DSO)

008715 = 87,15 mm, for Bore Diameter (BD) = 87,00
for Shaft Diameter (SD) = 80,70

The seal diameter is always the outside diameter without plating. Select the desired cross section in relation with the bore diameter.

Starting from the shaft size 80,70 the DSO (diameter seal outside) equals Shaft size 80,70 + 6,45 DSO = 87,15

Starting from the bore diameter 87,00 the DSO (diameter seal outside) equals Bore size 87,00 + 0,15 DSO = 87,15

Plating thickness on radial seals should be limited to 50 microns. Seal diameters remain unchanged for plated seals.

3.18M

Cross Section

Select the proper cross section or radial section (RS).

2/0

Material

The first digit designates the jacket material, the second is always a 0. For CSA type seals the second digit designates the spring material.

Available Materials & Codes
Jacket		Spring
Code	Material	Code	Material
1	Alloy X-750*	1	Alloy X-750*
2	Alloy 718	2	Alloy 718
5	304 SS	9	302 SS
-		A	Elgiloy
-		E	Nimonic
(*) X-750 will become obsolete Other materials on special request

1	Treatment 1: Work hardened See Tab on the last page

C50

Plating

Plating Code “C” = Copper Plating

Plating Thickness “50” = 30 to 50 Microns

See Tab on the last page

Disclaimer

Sitemap

Resilient metal seals from High Tech Metal Seals NV are used in the most extreme environmental conditions. Spring Energised Metal C Rings are used under extreme conditions where temperature can range from cryogenic up to extreme high temperatures, such as 800°C.
To serve the harsh conditions in today’s Oil and Gas exploration, High Tech Metal Seals NV designs and manufactures resilient metals seals which comply and exceed the ISO 15848 leakage requirements for valves intended for application with volatile air pollutants and hazardous fluids. High Tech Metals Seals are manufactured from high alloy materials so that the finished product complies with NACE MR0175 requirements. Silver plated Metal O rings or Metal C Rings, because of ductile layer are successfully used in high vacuum applications. Silver plated or PTFE coated spring energised C Rings and Metal C Rings comply and exceed the ISO 15848 leakage requirements, from cryogenic temperatures up to extreme high temperatures and pressures. In nuclear applications, particle research, and other radiation application, typically high load resilient metal seals, such as spring energized metal C Rings or Metal O Rings, with a ductile layer of silver are successfully used. High Tech Metal Seals NV, seals for extreme environmental conditions are particularly suited for high pressure. The system pressure assist in maintaining intimate contact with the mating flanges.