Stainless Steel API High Pressure Fitting Seal Joint Gasket O-Ring

• Customization: Available
• Type: Flat Gasket
• Material: Iron
• Model NO.: KASINRTJ
• Combination Washer Structure: B Type
• Combination Washer Packaging: All Inclusive
• Spring Washer Type: Standard
• Delivery Time: Depend on The Situation
• Pressure Rate: 900
• Tolerance: ±0.5mm
• Technology: Forge
• Business Term: Fob EXW CIF DAP
• Application: Oil and Gas
• Key Words: Ring Joint Gasket
• Color: Silver Yellow Blue Gold
• Come From: Wenzhou, Zhejiang
• Advantage: Good Quality and Competitive Price
• Certification: API-6A
• Transportation: Express Delivery/Sea/Air
• Working Temperature: -400℃ to +1200℃
• Quality Guarantee: at Least 5years
• Transport Package: Wooden Case, Carton
• Specification: R11-R105
• Trademark: KASINRTJ
• Origin: China
• HS Code: 7318220090
• Production Capacity: 10000000/Year
• Package Size: 25.00cm * 20.00cm * 30.00cm
• Package Gross Weight: 30.000kg
• Lead Time: 7 days (1 - 100 Pieces) ; To be negotiated ( > 100 Pieces)

Product Description

Working Principle

1.Metal-to-Metal Sealing: The gasket is compressed into a machined ring groove on the flange faces.
2.Line Contact: Flange bolt force creates high compressive stress on the gasket's sealing surface.
3.Elastic Deformation: The softer metal (compared to flange) deforms to fill the groove and block leakage paths.
4.Pressure-Assisted Seal: Internal system pressure further energizes the gasket against the groove walls.
5.Self-Centering: The ring design ensures precise alignment within the flange assembly during installation.

Product Features

1.Material Grades: Available in stainless steel 304, 304L, 316, 316L, and other alloys.
2.Profile Types: Manufactured in R, RX, and BX styles to match standard ring joint flanges.
3.Precision Machining: Tight dimensional tolerances ensure full compatibility with API 6A and ASME B16.5.
4.Corrosion Resistance: Stainless steel construction offers excellent resistance to oxidation and chemical attack.
5.Wide Size Range: Available for flange sizes from ½″ to over 24″ and all associated pressure classes.

MATERIAL	UNS NUMBER	MAXIMUM HARDNESS		IDENTIFICATION NOTE (B)
		BRINELL (BHN)	ROCKWELL (RB)
Soft Iron	-	90	56	D
Low Carbon Steel-note(a)	10	120	68	CS
4-6% Chrome 1/2% Moly	F5	130	75	F5
St.St.AISI 304	S30400	160	83	S304
St.St.AISI 316	S31600	160	83	S316
St.St.AISI 347	S34700	160	83	S347
St.St.AISI 410	S41000	140	76	S410
Alloy 600	NO6600	200	92	UNS Number
Alloy 625	NO6625	200	92	UNS Number
Alloy 800	NO8800	200	92	UNS Number
Alloy 825	NO8825	160	83	UNS Number
Alloy C276	N10276	200	92	UNS Number
SMO 254	S31254	180	89	UNS Number
Duplex	S31803 / S32205	250/235	99	UNS Number
Super Duplex	S32750 / S32760	250	-	UNS Number
Monel 400(M400)	N04400	140	76	UNS Number

1.High Integrity

 Provides a reliable seal under extreme pressures (up to 20,000 psi) and temperatures.
2.Durability

Withstands thermal cycling and vibration without loss of sealing performance.
3.Reusability

 Often can be reused if undamaged after disassembly, reducing maintenance costs.

4.Blow-Out Proof

The confined ring groove design prevents extrusion or blowout under high pressure.
5.Compliance Ready

Fully meets API 6A and ASME B16.20 standards for critical service applications.

6.Bi-Directional Sealing

Capable of sealing pressure from either direction without modification.

Specification

Product Recommendations

Company Profile

Workshop

Certifications

FAQ

1. Are you a trading company or factory? 

We are a manufacturer boasting 15 years of industry experience and holding proprietary import-export rights.

2.May I request free samples?
Free samples can be provided for first cooperation under sincere cooperation. 

3.What certifications do you have?
Yes, we hold ISO, CE, and PED certificates.

4. Can you do OEM Products?
Certainly! Our expert engineering department is eager to collaborate on your unique OEM projects, bringing your vision to life with precision and expertise.

5. How long is your delivery time? 
For normal products in 7-10 days; For bulk order, in 15-25 days. It depends. 
 
6. Warranty time? 
3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers. 

7. How about your requirement for MOQ?
For in-stock products, there is no MOQ requirement, offering you flexibility. However, if stock is insufficient, MOQ will be determined based on the product size, ensuring optimal efficiency.

8. What are your payment terms?
Typically, we require a 30% deposit and the remaining 70% upon BL Copy. However, we are always open to discussing alternative arrangements to suit your needs and ensure seamless transactions.