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203 Armstrong Drive (Freeport, PA)

Main Facility
203 Armstrong Drive
Freeport, PA 16229
T: +1.724.295.6200
Email: fre_sales@curtisswright.com

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AP Services, a product and service brand of Curtiss-Wright, is a manufacturer and integrated supplier of mechanical valve and pump packing, metal and fabricated gaskets, and a wide variety of specialized fluid sealing products for use in the power generation, chemical, pulp & paper, and refining industries.

Models

    AP STYLE 524

    AP Services, a product and service brand of Curtiss-Wright, manufactures valve and pump packing products that have the lowest leak rates and friction in the industry. Style 524 is made from 100% pure graphite filament yarn in a multiple braid construction. A proprietary process with a passive corrosion inhibitor treats each individual yarn. This is a special high quality graphite yarn excellent for nuclear applications where low sulfur and improved oxidation resistance is desired. Reduced levels of alkali metal oxidation catalysts contribute to improved oxidation resistance.

    Style 524 is manufactured in strict accordance to AP Services’ QA program to meet the most demanding specifications of the nuclear industry. Complete traceability along with chemical analysis is available for each lot. Meets or exceeds GE spec. D50YP12 and NEDC31735P.

    Style 524 yarn end rings are intended for use as a containment ring for Style 6300 flexible graphite rings. Style 524 is braided at AP Services to exact tolerances and uniform density, and is available as individual rings, combination 524/6300J packing sets, and in bulk.

    General Specifications

    Maximum Temperature 1,000 ºF
    Maximum Pressure 5,000 psi
    Maximum Shaft Speed 4,000 FPM
    Ph Range 0-14
    Construction Lattice Braid

    Standard Sizes

    Size 1/8 3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1
    ft./lb. 120 77 40 26.6 18 13.5 10.8 8.9 7.1 4.7 3.8 3.0

    AP STYLE 525

    AP Services, a product and service brand of Curtiss-Wright, manufactures valve and pump packing products that have the lowest leak rates and friction in the industry. Style 525 is manufactured from high strength, pure graphite filament yarns, in a lattice braid construction. Each yarn is treated with a proprietary coating to elevate the gland load capabilities in high pressure valve applications. Because of the unique characteristics of graphite yarn, no external lubrication is required.

    Style 525 is chemically inert and will withstand temperatures as high as 1000 ºF (steam to 1200 ºF). It’s low co-efficient of friction reduces shaft wear, while a low co-efficient of expansion allows for fine gland adjustment reducing leakage to a minimum. These properties combined with good thermal conductivity make Style 525 the perfect packing for severe service applications in both pumps and valves.

    Style 525 is suitable for a wide range of acids, caustics, alkalies, steam, and oil applications. Style 525 is braided at AP Services to exact tolerances and uniform density, and is available as individual rings, combination 525/6300J packing sets, and in bulk.

    General Specifications

    Maximum Temperature 1,000 ºF
    Maximum Pressure 5,000 psi
    Maximum Shaft Speed 4,000 FPM
    Ph Range 0-14
    Construction Lattice Braid

    Standard Sizes

    Size 1/8 3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1
    ft./lb. 110 67 29 19 14 12 9 6.4 5.4 3.1 2.5 2.2

    AP STYLE 5000

    AP Services, a product and service brand of Curtiss-Wright, manufactures valve and pump packing products that have the lowest leak rates and friction in the industry. Style 5000 is the most versatile, widely used packing material in the power generating industry today. It is manufactured from high strength and ultra-high purity graphite yarns. Lubrication and braid blockage is provided by high temperature graphite dispersion and PTFE locked in place by a proprietary process. An extra dense core provides dimensional stability throughout Style 5000’s working temperature and pressure range. Style 5000 works so effectively that it eliminates the need for wire insertion, which can cause stem damage. It has excellent sealing capabilities and extremely low frictional characteristics.

    Style 5000 is braided in strict accordance to AP Services’ QC program to meet the most demanding specifications of the nuclear industry. Complete traceability along with a complete chemical analysis is available for each lot.

    Style 5000 can handle most types of media such as acids, caustics, alkalis, steam, and oil in high temperature conditions. This packing effectively seals all types of valves, soot blowers, and most pump applications. Style 5000 is braided at AP Services to exact tolerances and uniform density, and is available as individual rings, combination sets, and in bulk.

    General Specifications

    Maximum Temperature 615 ºF
    Maximum Radiation 70 MRADS at 615 ºF
    Maximum Pressure 4,500 psi
    Maximum Shaft Speed 2,000 FPM
    Ph Range 0-14
    Construction Lattice Braid

    Standard Sizes

    Size 1/8 3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1
    ft./lb. 69 36 21 14 10 7 5.7 4.5 3.5 2.5 1.9 1.5