Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
MUELLER Flare Gasket: 1/4 in SAE, 3/16 in, Copper, 700 psi Max, 3/8 in W x 3/8 in L - Flare Gaskets & Bonnets for Access Valves
MUELLERFlare Gaskets & Bonnets for Access Valves

MUELLER Flare Gasket: 1/4 in SAE, 3/16 in, Copper, 700 psi Max, 3/8 in W x 3/8 in L

The MUELLER Flare Gasket (MPN A 00401) is a copper flare gasket designed for use with access valves. It features a 1/4 in SAE connection size and a 3/16 in size, with a maximum pressure rating of 700 psi. The gasket…

SKU 3G-OTH-71581

Brand
MUELLER
Item
Flare Gasket: 1/4 in SAE, 3/16 in, Copper, 700 psi Max, 3/8 in W x 3/8 in L
Category
Flare Gaskets & Bonnets for Access Valves
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

MUELLER
Manufacturer Part Number
A 00401
Type
3/16 in, Copper, 3/8 in W x 3/8 in L, A2L Compatible
Max
700 psi
Body Material
Copper
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

MUELLER Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MUELLER Flare Gasket (MPN A 00401) is a copper flare gasket designed for use with access valves. It features a 1/4 in SAE connection size and a 3/16 in size, with a maximum pressure rating of 700 psi. The gasket measures 3/8 in W x 3/8 in L and is A2L compatible.

Frequently Asked Questions

What is the MUELLER Flare Gasket A 00401 used for?

The MUELLER Flare Gasket A 00401 is a copper sealing component used with access valves in HVAC and refrigeration systems. It creates a leak-tight flare connection, supporting A2L refrigerants. Typical applications include commercial and industrial refrigeration lines where a reliable, high-pressure seal is required.

What are the specifications of the MUELLER Flare Gasket A 00401?

The MUELLER Flare Gasket A 00401 has a 1/4 in SAE connection, 3/16 in size, and a copper body. It is rated for 700 psi maximum pressure and measures 3/8 in W x 3/8 in L. The gasket is A2L compatible, making it suitable for use with low-flammability refrigerants.

Where to buy MUELLER Flare Gasket A 00401 worldwide?

3G Electric supplies the MUELLER Flare Gasket A 00401 worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact our team to place an order or request a quote for this copper flare gasket.

How to install a MUELLER Flare Gasket?

To install a MUELLER Flare Gasket, place the copper gasket between the male and female flare ends of the access valve. Tighten the nut to the manufacturer's recommended torque using a flare-nut wrench. Avoid over-tightening, which can deform the gasket. Always verify the connection is leak-free before pressurizing the system.

Used in

Common applications for MUELLER
Commercial refrigeration systems — Mueller steel shell filter driers for moisture and contaminant removal in liquid lines.
HVAC installations — Mueller sweat connection ball valves for flow control in refrigerant circuits.
Industrial process cooling — Mueller magnetic check valves to prevent backflow in refrigerant piping.
Refrigeration system maintenance — Mueller flare nuts and bushings for access valve connections.
Low-GWP refrigerant systems — Mueller A2L-compatible ball valves for use with low-flammability refrigerants.
Retrofit projects — Mueller filter driers and valves for upgrading existing refrigeration equipment.

MUELLER Products

3G Electric supplies MUELLER flare gaskets & bonnets for access valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
MUELLER Flare Nut: 1/4 in Female SAE, 7/16 in Female SAE Right-Hand, Brass, 700 psi Max (MPN A 05051). Key specifications — Body Material: Brass; Brand: MUELLER.
MUELLER
MUELLER Flare Nut: 1/4 in Female SAE, 7/16 in Female SAE Right-Hand, Brass, 700 psi Max (MPN A 05051). Key specifications — Body Material: Brass; Brand: MUELLER.
MUELLER Flare Nut: 3/8 in Female SAE, 5/8 in Female SAE Right-Hand, Brass, 700 psi Max (MPN A 05052). Key specifications — Body Material: Brass; Brand: MUELLER.
MUELLER
MUELLER Flare Nut: 3/8 in Female SAE, 5/8 in Female SAE Right-Hand, Brass, 700 psi Max (MPN A 05052). Key specifications — Body Material: Brass; Brand: MUELLER.
MUELLER Half-Union Connector: 1/4 in Male SAE Right-Hand, 1/4 in Male NPT Right-Hand, Brass (MPN A 04585). Key specifications — Body Material: Brass; Brand: MUELLER.
MUELLER
MUELLER Half-Union Connector: 1/4 in Male SAE Right-Hand, 1/4 in Male NPT Right-Hand, Brass (MPN A 04585). Key specifications — Body Material: Brass; Brand: MUELLER.
MUELLER Flare to Sweat Adapter: 3/8 in Male SAE, 5/8 in Female SAE Right-Hand, Copper, 700 psi Max (MPN A 15726). Key specifications — Body Material: Copper; Brand: MUELLER.
MUELLER
MUELLER Flare to Sweat Adapter: 3/8 in Male SAE, 5/8 in Female SAE Right-Hand, Copper, 700 psi Max (MPN A 15726). Key specifications — Body Material: Copper; Brand: MUELLER.
MUELLER Diaphragm Valve: 1/4 in Male Flare, Std Lg Body, 0.6 in Base to Port Center Ht (MPN A 14833). Key specifications — Brand: MUELLER; A2L Compatible: Yes.
MUELLER
MUELLER Diaphragm Valve: 1/4 in Male Flare, Std Lg Body, 0.6 in Base to Port Center Ht (MPN A 14833). Key specifications — Brand: MUELLER; A2L Compatible: Yes.
MUELLER Diaphragm Valve: 3/8 in Male Flare, Std Lg Body, 0.6 in Base to Port Center Ht (MPN A 14835). Key specifications — Brand: MUELLER; A2L Compatible: Yes.
MUELLER
MUELLER Diaphragm Valve: 3/8 in Male Flare, Std Lg Body, 0.6 in Base to Port Center Ht (MPN A 14835). Key specifications — Brand: MUELLER; A2L Compatible: Yes.

More from MUELLER

View all MUELLER parts →