HTMS - High Tech Metal Seals on line

Seal dimension

Groove dimensions

Load

AS		RS		MT	DC	SD range	BD	Tol. SD	GD	R	Rad.
Axial section	Tolerance on AS (cross section)	Radial section	Material code	Material thickness	Diametrical clearance	Shaft Diameter (range)	SD +	+0	Groove Depth (min.-max.)	Radius (max.)	N/mm Circum- ference
1,57	+/- 0,03	1,79	M	0,15	0,03	20-150	3,61	-0,03	1,27-1,37	0,30	60
2,39	+/- 0,05	2,73	M	0,25	0,05	35-200	5,51	-0,03	1,91-2,01	0,50	70
3,18	+/- 0,08	3,63	M	0,38	0,06	45-200	7,32	-0,03	2,54-2,67	0,75	100
3,96	+/- 0,08	4,52	M	0,41	0,08	60-200	9,12	-0,05	3,18-3,30	1,20	105
4,78	+/- 0,10	5,46	M	0,51	0,10	100-200	11,02	-0,05	3,84-3,99	1,20	130

Load and spring back figures are based on Inconel 718 in the heat treated condition. Actual load figures and to a lesser extend spring back can differ hugely from the given data. Tolerances on groove depth, plating, diametrical clearance and differences in material batches can create differences of up to 100% for the smaller cross sections, down to 50% for the bigger cross section.

Tightness
The tightness with a Commaseal® (COI) is more than with any other metal seal a function of the shaft condition. The surface finish of the shaft shall be mirror polished and the hardness shall be high enough so that the sliding motion of seal and shaft does not detoriate either of them.

In addition we advise to silver plate Commaseal® for better tightness, reduced friction and wear.

Example: COI - 010000 - 3.96M - 2/2 - 1 - S50

COI	Seal Type COI: Dynamic side at shaft diameter

010000

Seal Diameter (DSI)

010000 = 100,00 mm, for Bore Diameter (BD) = 109,71

The seal diameter is always the shaft diameter without plating.
DSI = SD

3.96M

Cross Section

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

2/2

Material

The first digit designates the Commaseal material, the second, the selected spring.

Available Materials & Codes
Jacket		Spring
Code	Material	Code	Material
1	Alloy X-750*	1	Alloy X-750*
2	Alloy 718	2	Alloy 718
(*) X-750 will become obsolete Other materials on special request

1	Treatment 1: Work hardened View the code description in a pop up window.

S50

Plating

Plating Code “S” = Silver Plating

Plating Thickness “50” = 30 to 50 Microns

View the code description in a pop up window.

Disclaimer

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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.