ASME B16.20 Spiral Wound Gasket

• Type: Spring Washer
• Material: Stainless Steel
• Combination Washer Structure: B Type
• Combination Washer Packaging: All Inclusive
• Spring Washer Type: Standard
• Size: 1/2"-40"Inch
• Model NO.: ASME B16.20 Spiral Wound Gasket
• Mtc: Mtc En10204 3.1 Will Be Provided to All Goods.
• Transport Package: Sea Worthy
• Trademark: C&N
• Origin: China
• Production Capacity: 50000pics/Year

Product Description

Quick Details
Place of Origin: Hebei, China (Mainland)
Brand Name: c&n
Model Number: Spiral Wound Gasket
Material: Stainless Steel
Shape: Ring Gasket
Standard or Nonstandard:Standard
RAW MATERIAL: 304/316/316L
FILLING: 
THICKNESS: 3-4.5MM
Packaging & Delivery

Packaging Details:	plywood case
Delivery Detail:	15-30 days after deposit

 

 
 
 





PRODUCT INTRODUCTION
ASME B16.20   Spiral Wound Gasket 
Material: Stainless Steel 
The Stainless Steel Spiral Wound Gasket adopts high-quality SUS304 or SUS316
("V" or "W"shape) metal strips, other alloy materials 
asbestos, PTE and non-asbestos, which are overlapped and wound spirally with each other.
The metal strips are fixed on the initial and terminal ends by means of spot welding.
The metal spirally-wound gasket has the best resilien ce among the semi-metal hermetic gaskets.
Its structural density can be made subject to different locking forces.
Also the internal and external steel rings can be used to control its maximum compaction.
It's not demanding for the surface precision of the flange sealing surface contacting the
spirally-wound gasket. It's especially applicable for such occasions as uneven load, slack joint,
periodical changes of temperature and pressure, impact or vibration.
It's an ideal static seal element for flange connection in valves, pumps, heat exchangers, towers, manholes,handholes and so on.
Technology

Structural material of metallic wrapping pad:

Filling	Steel band	Inner ring	Outer ring
Asbestos wrapping	SUS 304	Carbon steel	Carbon steel
Graphite wrapping	SUS 316	SUS 304	SUS 304
Teflon wrapping	SUS 316L	SUS 316	SUS 316
		SUS 316L	SUS 316L

Filling	Temperature(ºC)	Max operating pressure(kg/cm2)
Asbestos wrapping	-200~550	250
Graphite wrapping	-150~450	100
Teflon wrapping	240~260	100

Flange type	Spiral wound gasket form
Flat face flange(F.F)	Wrapping pad with outer ring only
	Wrapping pad with inner and outer rings
Raised face flange(R.F)	Wrapping pad with outer ring only
	Wrapping pad with inner and outer rings
Male and female flange(M & F)	Basic wrapping pad
	Wrapping pad with inner ring only
Tongue and groove flange(T & F)	Basic wrapping pad
	Wrapping pad with inner ring only
Flat and groove flange(F & G)	Basic wrapping pad
	Wrapping pad with inner ring only

 
 

Wrapping pad coefficient	m=2.5-4
Wrapping pad service pressure	≤25MPa
Wrapping pad service temperature	-196ºC-700ºC(Oxidizing medium no higher than 600ºC)
Wrapping pad minimum pretension specific pressure	y=68MPa

Application
Spiral Wound Gasket of flange connection in pipelines, valves, pressure containers,
condensers, heat exchangers, towers, manholes, handholes and so on in such industries
as petroleum, chemical engineering, metallurgy, electricity, shipping and machinery.