D-Type Inner and Outer Ring Metal Winding Seal Gasket Spiral Wound Gasket

• Type: Flat Gasket
• Material: Stainless Steel
• Combination Washer Structure: D Type
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: Spiral Wound Gasket
• Combination Washer Packaging: All Inclusive
• Spring Washer Type: Standard
• MOQ: According to Customer Needs to Agree
• Delivery Time: 15-30 Days
• Transport Way: by Sea
• Form: Seal Gasket
• Winding Gasket Coefficient: M= 2.5-4
• Min Preload Pressure: Y= 68MPa
• Working Pressure: Pn<= 25 MPa
• Feature: High-Temperature, High-Pressure Resistance
• Transport Package: Boxes, Plywood Boxes or Pallets
• Specification: DN15-1000
• Origin: China
• HS Code: 848410000
• Production Capacity: 50000 Pieces / Year
• Package Size: 50.00cm * 35.00cm * 20.00cm
• Package Gross Weight: 2.000kg

Product Description

Features

√  Wide application, hign temperature, high pressure and ultra-low temperature resistance or vacuum use.

√ At high temperature, high pressure fluctuations frequent-position, the sealing performance remains stable and reliable.

√ Excellent sealing performance.

√ Easy to install and use.

Product Details

Component

 

Product Name	Spiral Wound Gasket
Size	DN15-1000 etc
Material	Stainless steel: 201,TP304,TP316, TP304L, TP316L, 304L, 316L, TP321, TP310S, 904L etc.             Carbon steel: A105, Q234, Q235, X52, F60,F70, Y60, Y70 etc. Duplex steel: 2205(S31803) S32205, 2507(S2750) S3276 etc. Nickel Titanium
Packing	Graphite, abstobes, PTFE, non-abstobes fiber, ceramic fiber, mica-tape etc
Standard	ASME, ANSI, DIN, JIS, GB, BS, API etc
Usage	Pipe, valve, pump, heat exchanger, flange joint etc Petrochemical, machinery, electric power, metallurgy, shipbuilding, medicine, atomic energy and other departments.
Customization	According to customer's needs to agree

A B C D Type Comparsion

 

Basic Type:

Basic type gasket: inner and outer diameters are reinforced with several piles of metal without filler to give greater stability and better compression characteristics. 

Suitable for tongue and groove, male and famale or grooved to flat face flange essemblies.

Inner Ring Type:

Solid inner metal ring acts as a compression stopper. To prevent accumulation of solids, reduce trubulent flow of process fluids and minimize erosion, damages of gasket between flange bore and the inside diameter, the annular space is filled up by solid inner metal ring;

Suitable for male and female pipe flanges.

Outer Ring Type:

Solid outer accurately locates the gasket on the flange face to give the additional radial strength to prevent gasket blowout and acts as a compression limiter. In case of installing the outer ring, it is very easy to install the gasket to flange face because the end of outer ring will touch at bolts;

Suitable for use with flat face and raised face flanges. For class 900 and above an internal ring is recommended.

Inner & Outer Ring Type:
An inner ring and outer ring type gasket will give an additional compression limiting stopper for gasket inner and outer side. It will prevent the corrosions on flange face at annular space;

Suitable for use with flat face and raised face flanges and specified for high pressure and temperature service, Class 900 and above or where corrosive or toxic media are present.
More related Gasket

 

Test & Inspection

 

Transportation

About Us

   Wenzhou Dejia Special Steel Co., Ltd specializes in producing various products such as elbows, tees, reducers, caps, flanges and valves. We can produce products according to National standard, American standard etc. It's our feature that we can produce products of any size ad per customers' special demands.

    Our company thrive on honesty, continuity and transparency with our clients. We would like to cooperate with global customers and make the good protection project in world market.

   Why choose our company? We features scientific and rational design, advanced production process, quality manufacturing materials,  comprehensive security protection and first-class after-sales service.

 

FAQ

Q: What are your main products?
A: We specialize in producing a wide range of valves, elbows, flanges, Tee, Cross, gaskets etc.

Q: How long is your delivery time?
A:Usually it's 15-30 days all the best or it's more than 30 days according to the quantity.

Q: Do you provide samples? Free or charge?
A:Yes, we'd like to offer you samples but you have to cough up dough for shipping.

Q: How do you guarantee the quality of your products?
A: Before mass production, a few products made by our engineers for conduct tests. All products must be checked before shipping.

Q: How about your service?
A: Aiming to the concept of " Service Supremacy", we have pre-sale service, on-purchase service and after-sales service.

Q: About packing?
A: Depending on the properties of the product, choose its appropriate packaging to protect the item from damage and allow you to purchase at ease.

Q: About color difference?
A:  All products are shot in real objects, and there will be a slight degree of color difference between the real thing and the picture due to the shooting light, the color value bias of the display, and the individual's understanding of color. Colour is subject to the goods received.

Q: What size can your company produce?
A: We have all the common sizes on the market. In addition, we can also customize according to your needs, whether its size or material.