Products

New products

  • Lens Ring Joint Gasket
    Lens Ring Joint Gasket

    Ningbo Kaxite Sealing Materials Co., Ltd is one of the leading Lens Ring Joint Gasket manufacturers, welcome to wholesale cheap Lens Ring Joint Gasket from our factory.

  • Double Jacketed Gasket
    Double Jacketed Gasket

    Ningbo Kaxite Sealing Materials Co., Ltd is one of the leading Double Jacketed Gasket manufacturers, welcome to wholesale cheap Double Jacketed Gasket from our factory.

  • Corrugated Gaskets
    Corrugated Gaskets

    Ningbo Kaxite Sealing Materials Co., Ltd is one of the leading Corrugated Gaskets manufacturers, welcome to wholesale cheap Corrugated Gaskets from our factory.

  • PTFE Envelope Gasket
    PTFE Envelope Gasket

    Ningbo Kaxite Sealing Materials Co., Ltd is one of the leading PTFE Envelope Gasket manufacturers, welcome to wholesale cheap PTFE Envelope Gasket from our factory.

  • Jacketed Graphite Packing
    Jacketed Graphite Packing

    Ningbo Kaxite Sealing Materials Co., Ltd is one of the leading Jacketed Graphite Packing manufacturers, welcome to wholesale cheap Jacketed Graphite Packing from our factory.

Products

Lens Ring Joint Gaskets

> Lens ring joint used in higher pressure than 3,000 lbs. > These gaskets had been used on pipe flanges in synthesizing line.


Send Inquiry


Description


Lens ring

Metal lens gasket

High pressure pipe connection, the widely used lens gasket sealing structure.Lens gasket seal face were spherical, contact with the pipeline cone sealing faces, the initial state for a loop.Under the pre-tightening force, lens pad in contact produce plastic deformation, the loop into a ring, good sealing performance.Due to the contact surface is made up of spherical and cant naturally formed, in a gasket is easy.Lens gasket seal belongs to forced sealing, sealing surface for spherical surface and conical surface contact, easy appear indentation, poor interchangeability of parts.In addition, the gasket manufacturing cost is higher, processing also more difficult.


Metal lens gasket performance characteristics:

1, high temperature resistant, resistant to high pressure, suitable for high pressure flange;
2, reliable sealing persistent;
3, to adapt to the working conditions of pressure and temperature fluctuations;

Metal lens gasket application scope: general machinery industry in our country the current Angle type high pressure valve end flange, USES the lens gasket seal, apply to the nominal pressure of 16.0 ~ 32.0 Mpa.Nominal diameter is 3 ~ 200 mm;Use temperature was minus 30 ~ 200 oC, often used for sealing of high-pressure hydrogen acid medium.

Metal ring gasket first comes from the United States, in the 1920 s, the first to use in boiler, then used for manhole cover, autoclave other Windows sealed, later in the oil production and refining industry particularly valued.With the increase of temperature and pressure of the steam power plant, metal ring gasket have been used more and more widely.

Metal lens gasket main structural forms:

Metal lens gasket material selection:

material Maximum hardness mark oC
Brinell HB Rocknell HB Min Max
Soft Iron 90 56 P -40 540
Low C/S 120 68 S -60 500
SS410 170 86 S410 -40 850
SS304 160 83 S304 -250 540
SS316 160 83 S316 -200 815
SS347 160 83 S347 -200 870
4-6%Cr,0.5% Mo, 130 72 F5 -40 650
Copper 80 - C -100 315
Aluminum 35 - A -200 425
Inconel 600 150 78 Y -100 1095
Inconel 825 150 78 W -100 1095
Monel 400 150 78 M -100 760
Titanium 215 77 T -200 540
Nikel 200 110 58 N -200 760
Hastelloy B2 230 121 X1 -100 1095
Hastelloy C276 210 110 X2 -100 1095

The size of the metal lens gasket limit deviation:

Name of size Generation of no. Limit deviation
Ring pad pitch diameter P + / - 0.18
The width of the ring gasket A + 0.20 - 0
The height of the ring gasket H + 0.20 - 0
Metal lens mat bottom width C + 0.20 - 0
23 o Angle Plus or minus 0.15 o
Radius of ring gasket R + / - 0.4
Metal lens mat all 23 o Angle of the plane, the surface roughness shall be no greater than 0.8 microns

Metal lens gasket main performance parameters:


Coefficient of gasket
m=5.50-6.50
Gasket using pressure <=32MPa
Gasket using temperature - 196 oC to 1000 oC
Than the minimum preload pressure y=126.6-182.8MPa

Metal lens pad technology standards:

Can provide any size of standard and non-standard, including API 6 a, ASME B16.20, DIN 2693-67, JPI - 7-23-72 - s, DIN - 2696-1999 and other standards.

Domestic relevant standards:

JB/T 2777-1992 | PN16.0 ~ 32.0 MPa without aperture lens gasket
JB/T 2776-2010 | valve parts high-pressure lens pad
JB90-1959 type of flange sealing surface lens with metal gasket

Does the actual application condition is complex, the above parameters are for reference only do not make any guarantee is requested.Metal lens gasket material selection:

material Maximum hardness mark oC
Brinell HB Rocknell HB Min Max
Soft Iron 90 56 P -40 540
Low C/S 120 68 S -60 500
SS410 170 86 S410 -40 850
SS304 160 83 S304 -250 540
SS316 160 83 S316 -200 815
SS347 160 83 S347 -200 870
4-6%Cr,0.5% Mo, 130 72 F5 -40 650
Copper 80 - C -100 315
Aluminum 35 - A -200 425
Inconel 600 150 78 Y -100 1095
Inconel 825 150 78 W -100 1095
Monel 400 150 78 M -100 760
Titanium 215 77 T -200 540
Nikel 200 110 58 N -200 760
Hastelloy B2 230 121 X1 -100 1095
Hastelloy C276 210 110 X2 -100 1095

The size of the metal lens gasket limit deviation:

Name of size Generation of no. Limit deviation
Ring pad pitch diameter P + / - 0.18
The width of the ring gasket A + 0.20 - 0
The height of the ring gasket H + 0.20 - 0
Metal lens mat bottom width C + 0.20 - 0
23 o Angle Plus or minus 0.15 o
Radius of ring gasket R + / - 0.4
Metal lens mat all 23 o Angle of the plane, the surface roughness shall be no greater than 0.8 microns

Metal lens gasket main performance parameters:


Coefficient of gasket
m=5.50-6.50
Gasket using pressure <=32MPa
Gasket using temperature - 196 oC to 1000 oC
Than the minimum preload pressure y=126.6-182.8MPa

Metal lens pad technology standards:

Can provide any size of standard and non-standard, including API 6 a, ASME B16.20, DIN 2693-67, JPI - 7-23-72 - s, DIN - 2696-1999 and other standards.

Domestic relevant standards:

JB/T 2777-1992 | PN16.0 ~ 32.0 MPa without aperture lens gasket
JB/T 2776-2010 | valve parts high-pressure lens pad
JB90-1959 type of flange sealing surface lens with metal gasket

Does the actual application condition is complex, the above parameters are for reference only do not make any guarantee is requested.

Products Keywords
Related Products
Standard Spiral Wound Gasket, Spiral Wound Gasket with Inner and Outer Ring, CG Type Spiral Wound Gasket with Outer Ring, Spiral Wound Gasket for Heat Exchangers, Non-rounded Spiral wound Gaskets, Special Materials Spiral Wound Gaskets, Exhaust Spiral Wound Gaskets, Pure Expanded Graphite Gasket, Graphite Gasket Reinforced With Metal Foil, Graphite gasket reinforced with metal mesh, Tanged Metal Reinforced Graphite Gasket, Oval Ring Joint Gasket, Octagonal Ring Joint Gasket, RX Ring Joint Gasket, BX Ring Joint Gasket, Lens Ring Joint Gasket, Double Jacketed Gasket, Stamping Jacket Gasket, Corrugated Gaskets, Kammprofile Gasket with Integral Outer Ring, Kammprofile Gasket with Loose Outer Ring, Kammprofile Gasket Basic Style, Solid Copper Gasket, Copper Exhaust Gasket, Copper Head Gasket, Pure PTFE Gasket, PTFE Envelope Gasket, Expanded PTFE Gasket, Modified PTFE Gasket, Non-asbestos Rubber Gasket, Mineral Fiber Rubber Gasket, Rubber Gasket, Rubber O Rings, Cork Rubber Gasket, Expanded PTFE Joint Sealant Tape, Braided Graphite Tape, Braided Graphite Tube, Corrugated Graphite Tape, Flange Insulation Gasket Kits, Neoprene Faced Plain Phenolic Flange Insulation Gasket Kit, Asbestos Gasket, OFHC Copper Gaskets, Oxygen Free Copper Gaskets, OFHC Copper Gaskets for CF Flanges, Tri-Clover Gasket, EPDM Tri Clover Gasket, Tri Clover EPDM Gasket, Silicone Tri Clover Gasket, Tri Clover Rubber Gaskets, Viton Tri Clover Gaskets, PTFE Tri Clover Rubber Gasket, Tri Clover Gaskets PTFE, Black Rubber Gaskets, Black Rubber Gasket With Cloth Insert, Nitrile Rubber Gaskets, Styrene-Butadiene Rubber Gaskets, Neoprene Rubber Gaskets, Ethylene Propylenediene Rubber Gaskets, Silicone Rubber Gaskets, Fluorine Rubber Gaskets, Oil-Resisting Rubber Gaskets, Cold & Heat-Resisting Rubber Gaskets, Acid & Alkali-Resisting Rubber Gaskets, Insulating Rubber Gaskets, Fire-Resistance Rubber Gaskets, Natural Gum Rubber Gasket, Flange Insulation Gasket Sets, Type D Flange Insulation Gasket, Neoprene Faced Phenolic Gaskets, API Ring Joint Type Gasket, VCS Very Critical Service Flange Insulation Gasket kit, CG Type Spiral Wound Gasket with Outer Ring