Merit Brass
Stainless Steel RF Blind Flange
- SKU:
- SFBSS
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
Stainless Steel RF Blind Flange
Stainless Steel Raised Face Blind Flanges are designed to terminate piping systems, isolate equipment, or provide access points for future expansion and maintenance. With no center bore, blind flanges provide a solid bolted closure for compatible flange systems while maintaining dependable sealing performance.
Available in 150# and 300# pressure classes and manufactured from 304L or 316L forged stainless steel, these raised face blind flanges provide corrosion resistance, mechanical strength, and dimensional consistency for industrial, commercial, chemical, marine, food processing, water treatment, and general process piping applications.
Product Highlights
- Raised Face (RF) blind flange design
- No center bore for complete piping-system closure
- Available in 150# and 300# pressure classes
- Available in 304L and 316L stainless steel
- Forged stainless steel construction
- Material conforms to ASME A182
- Flange dimensions conform to ASME B16.5
- Designed for isolating or terminating compatible piping systems
- Excellent corrosion resistance for demanding applications
- Manufactured in an ISO 9001:2008 certified facility
Blind Flange Design
A blind flange has no center bore and is used to close the end of a flanged pipe, valve, vessel, or equipment connection. When bolted to a compatible mating flange with the appropriate gasket, it creates a removable closure without permanently capping or welding the piping system.
This design is useful where future access, inspection, maintenance, cleaning, or system expansion may be required.
Technical Specifications
| Product Type | Raised Face Blind Flange |
|---|---|
| Pressure Classes | 150# & 300# |
| Flange Pattern | Class 150 & Class 300 |
| Available Materials | 304L Stainless Steel & 316L Stainless Steel |
| Construction | Forged Stainless Steel |
| Flange Face | Raised Face |
| Center Bore | None - Solid Blind Closure |
| Material Standard | ASME A182 |
| Dimensional Standard | ASME B16.5 |
| Manufacturing Quality | ISO 9001:2008 Certified Facility |
| Primary Applications | Pipe Termination, Equipment Isolation, Maintenance Access & Process Piping |
Raised Face Sealing Surface
The raised face provides the gasket sealing surface for compatible bolted flange assemblies. The raised sealing area helps concentrate gasket loading when the flange is properly assembled with a compatible mating flange, gasket, and bolting arrangement.
Always verify flange facing and gasket compatibility before installation.
150# vs. 300# Pressure Class
150# Class
- Class 150 flange pattern
- Common choice for general commercial and industrial piping
- Raised face configuration
- Available in 304L and 316L stainless steel
300# Class
- Class 300 flange pattern
- Designed for applications requiring a higher flange pressure class
- Raised face configuration
- Available in 304L and 316L stainless steel
304L vs. 316L Stainless Steel
304L Stainless Steel
- Strong general-purpose corrosion resistance
- Commonly used in commercial and industrial piping
- Suitable for many water, food, and process applications
- Low-carbon stainless steel grade
316L Stainless Steel
- Enhanced corrosion resistance for demanding environments
- Commonly selected for marine and chloride-exposed service
- Suitable for many chemical and process piping applications
- Low-carbon stainless steel grade
Forged Stainless Steel Construction
These blind flanges are manufactured from forged stainless steel material conforming to ASME A182. Forged construction provides mechanical strength, durability, and dimensional consistency for demanding piping systems.
Flange dimensions conform to ASME B16.5 for applicable Class 150 and Class 300 flange systems.
Common Applications
System Closure & Isolation
- Pipe termination
- Valve and equipment isolation
- Pressure-system closure points
- Maintenance access locations
- Future piping-system expansion points
Industrial & Process Piping
- Chemical processing
- Water treatment systems
- Food processing
- Marine piping
- General industrial process piping
Important Ordering Notes
- Product type: Raised Face (RF) blind flange.
- Available pressure classes: 150# and 300#.
- Available materials: 304L and 316L stainless steel.
- Blind flange has no center bore and provides a solid piping-system closure.
- Forged stainless steel material conforms to ASME A182.
- Forged stainless steel flange dimensions conform to ASME B16.5.
- Manufactured in an ISO 9001:2008 certified facility.
- Confirm nominal flange size and pressure class before ordering.
- Verify raised face configuration, mating flange, gasket, and bolting compatibility.
- Confirm pressure, temperature, and media compatibility for the intended piping system.
- Confirm the appropriate 304L or 316L material grade for the service environment.
- Refer to the Stainless Steel ANSI Flange Dimensions PDF for dimensional information.
Product Documents
Frequently Asked Questions
What is a blind flange?
A blind flange is a solid flange with no center bore. It is used to close the end of a flanged piping system, valve, vessel, or equipment connection.
What does RF mean?
RF means Raised Face. The gasket sealing area is raised above the surrounding flange face for use with compatible gasketed flange assemblies.
What pressure classes are available?
These stainless steel blind flanges are available in 150# and 300# pressure classes.
What stainless steel grades are available?
These blind flanges are available in 304L and 316L stainless steel.
What is the difference between 304L and 316L?
Both provide corrosion resistance. 316L is generally selected for more demanding environments, including many marine, chloride-exposed, and chemical-processing applications.
What material standard applies to these flanges?
The forged stainless steel material conforms to ASME A182.
What dimensional standard applies?
The forged stainless steel flange dimensions conform to ASME B16.5.
Why use a blind flange instead of permanently capping a line?
A blind flange provides a removable bolted closure, allowing the piping system or equipment connection to be reopened later for maintenance, inspection, cleaning, or expansion.
Does a blind flange have a pipe connection?
No. A blind flange does not have a center bore or direct pipe connection. It bolts to a compatible mating flange to close the opening.
Where can I find flange dimensions?
Use the Stainless Steel ANSI Flange Dimensions PDF in the Product Documents section above to review dimensional information before ordering.
What applications are blind flanges commonly used for?
Common applications include piping-system termination, equipment isolation, maintenance access, vessel connections, chemical processing, water treatment, marine systems, and general industrial piping.
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