My 10+ year old s-715 hisses, even after installing new s-727 plugs. does the very small o-ring in this s-715 eventually wear out?

Yes, orings can get old and less plyable so they will not seal as well

is this for high pressure propane on an RV tank?

The model number S-715 will be an air style fitting. The maximum pressure will be 300 PSI.

Mine says made in USA on packaging. Nothing listed on the part itself. I like mine, purchased several and all work good. Would buy again.

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Industrial Coupler 1/4" NPT Female Brass, M-STYLE® Quick Connect Air Coupler, S-715 - Pack of 10

Industrial Coupler 1/4" NPT Female Brass, M-STYLE® Quick Connect Air Coupler, S-715 - Pack of 10

Product ID: 37180212

Details

Brand
Milton
Color
Red
Connector Type
Coupling
Exterior Finish
Alloy Steel
Item Weight
1.6 ounces
Item dimensions L x W x H
1.96 x 0.93 x

💨40 SCFM Airflow Capacity

🔥Max Temp 250°F

⚙️1/4" NPT Female Thread

€ 24.46

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Description

🔗 Connect Like a Pro — The Ultimate Quick-Change Air Coupler

UNIVERSAL COMPATIBILITY - Seamlessly connects with all M-Style and MIL-C-4109 compliant couplers for effortless integration.
HIGH PRESSURE PERFORMANCE - Handles up to 300 PSI inlet pressure, powering your tools without compromise.
TRUSTED INDUSTRY STANDARD - Milton’s M-Style coupler is the go-to choice for professionals demanding reliability and precision.
DURABLE BRASS CONSTRUCTION - Premium brass body paired with case-hardened steel drag guard ensures rust resistance and long-lasting performance.
OPTIMAL AIRFLOW EFFICIENCY - Delivers a robust 40 SCFM for consistent, high-performance pneumatic operation.

The Milton S-715 Industrial Coupler is a 1/4" FNPT female brass M-Style quick-connect air coupler designed for professional-grade pneumatic systems. Compatible with all MIL-C-4109 standard fittings, it supports up to 300 PSI and 40 SCFM airflow, withstanding temperatures up to 250°F. Its durable brass construction and case-hardened steel drag guard ensure rust resistance and secure connections, making it the industry standard for reliable, high-performance air tool coupling.

Specifications

ASIN	B0002SQTAK
Best Sellers Rank	#18,393 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #12 in Air Tool Fittings
Brand Name	Milton
Color	Red
Connector Type	Coupling
Customer Reviews	4.6 4.6 out of 5 stars (1,932)
Exterior Finish	Alloy Steel
Global Trade Identification Number	00030937007155
Included Components	Female M-Style Coupler
Item Dimensions	1.96 x 0.93 x 0.93 inches
Item Type Name	Coupler
Item Weight	1.6 ounces
Manufacturer	Milton Industries
Manufacturer Part Number	S-715
Manufacturer Warranty Description	1-Year Limited Warranty
Material Type	Brass
Model Number	S-715
Number of Pieces	1
Size	1/4 inch (Pack of 1)
Thread Type	NPT
UPC	030937007155
Unit Count	1 Count

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€ 24.46

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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