Power Generation Seal Rings & Piston Rings

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	Power Generation Seal Rings

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Precision Rings, Inc. (PRI) works closely with worldwide industry leaders in the power generation field to create the best seal rings for both nozzle and exhaust duct applications. Gas Turbines rely heavily on nozzles to introduce the combustion gases at a constant rate to create the cleanest and most efficient burn possible. Failure from a nozzle can cause damage to other nozzles and areas of the combustion chamber necessitating extensive maintenance. By creating a better seal between the differentiating air and gas paths, Precision Rings is able to help attain the optimal burn, as well as the cycle time of the gas turbine. The contracting and expanding rings for power generation that PRI creates have out-performed target nitrous oxide (NOX) output levels set up by customers and the EPA. The tight tolerances held on Seal Ring designs will allow the system to attain the mandated exhaust standards.

Specifications

Applications

Eco Friendly

Shipping

Ring Gap Style

Quality Assurance

Industries Served		US and Foreign Power Generation Turbine manufacturers

Temperature Limits		-100 to 2000 ºF -73 to 1093 ºC

Diameter		0.200 in to over 100 inches.

Materials Commonly Used to Manufacture		Below is a list of materials PRI commonly uses to manufacture piston and seal rings. Please note this is not an exhaustive list of materials used. 17-4 PH 17-7 PH 300 Series Stainless 400 Series Stainless A286 Aluminum Alloy Aluminum Bronze Hastelloy Inconel 600 Inconel 625 Inconel 792 Inconel X-718 Inconel X-750 K-Monel Ni Resist Irons Nitronic 60 Rene 41 S-Monel Stellite 25 Stellite 31 Titanium Alloy Torlon Vespel DuPont SP-1, SP-21, and SP-22 Virgin Teflon Waspaloy

Type of Seal		Expanding larger image Contracting larger image

Ring Types		One Piece Ring larger image Two Ring Combination larger image Three Ring Combination larger image Marcel Spring larger image Pinned larger image

Surface Protection Treatment		Precision Rings, Inc. offers a wide array of surface protection treatments. Since each design is custom, the engineering department can select the optimum treatment for each application if necessary.

Media to be Sealed		Precision Rings produces power generation Seal Rings for gas and exhaust air applications.

Turning Tolerances		Accuracy - ±0.0002 (CNC Lathes) Accuracy - ±0.0005 (Vertical Turret Lathe) Repeat Accuracy - ±0.0002 (CNC Machine Centers)

Grinding Tolerances		Blanchard Accuracy - ±0.0004 O.D. & I.D. Accuracy - ±0.0002

Milling Tolerances		Repeat Accuracy - ±0.0005

Coordinate Measuring Machine Accuracy		±0.0002

Heat Treating		Precision has the capability of heat treating when required by material specifications and/or design criteria.

Heat Treat (Furnaces)		2500 ºF

Heat Treat (Deep Freeze)		-100 ºF

Heat Treat (Salt Baths)		1100 ºF

Order Volumes		Power Generation Seal Rings can be created for prototyping or high volume runs.

Drawing Types Accepted		bmp doc dwg iam idw iges ipt jpeg pdf ppt sat step stl tif xcl xel zgl

Types of Motion		Butterfly Valve Reciprocating Rotating Static

Pressure Differentials		Precision Rings, Inc. can create Power Generation Seal Rings to satisfy design criteria for any pressure differential. This includes both standard and reversing pressure systems.