What material is the 1" 1.04" Round Red Polypropylene Plug made of?

The plug is made of low-density polyethylene (LDPE) or Flex Temp, which is a thermoplastic rubber.

What is the temperature range this plug can withstand?

The LDPE material can withstand temperatures from -94 to 175° F (-70 to 79° C), while the Flex Temp material can handle 0 to 300° F (-18 to 148° C).

Is this plug suitable for hydraulic fittings?

Yes, this tapered cap/plug may be used for hydraulic fittings as well as MIL Spec, SAE-type fittings, and both threaded and non-threaded fittings.

What are the dimensions of this round plug?

The dimensions are as follows: Dim A: 0.915 in, Dim B: 1.040 in, Dim C: 0.855 in, Dim D: 0.980 in, Dim E: 0.690 in, and Dim F: 1.160 in.

What color is this plug and does it meet any specifications?

The plug is red in color and meets the NAS 834 specification.

1" 1.04" Round Red Polypropylene Plug T-12X

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1" 1.04" Round Red Polypropylene Plug T-12X

Name: 1" 1.04" Round Red Polypropylene Plug T-12X
Brand: CaPlugs
SKU: T-12X/99394291
Price: 1.79 USD
Availability: InStock
Rating: 4.8 (10 reviews)

CaPlugsSKU: T-12X/99394291

Added to catalog: February 15, 2023

Last product update: July 13, 2026 at 9:27 PM

$1.79 $2.84

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In stock at Elkhart RV Parts (198 units), ready to ship

Availability details

Elkhart RV Parts warehouse198 ready to ship

ERVP overstock warehouse0 available

This quantity is stocked at ERVP. See the delivery estimate below for the current expected window.

Delivery Estimate July 22 – July 25

1-Hour Cancellation Window

Seal the Deal: The Versatile Red Polypropylene Plug that Keeps Your Tank Clean

Protect your tank fittings from dirt and debris with this easy-to-install 1.04-inch round red plug, made from durable low-density polyethylene or Flex Temp thermoplastic rubber. Designed to fit MIL Spec, SAE-type, hydraulic, threaded, and non-threaded fittings, it performs reliably in extreme temperatures and meets NAS 834 specifications. The tapered design ensures a secure fit and hassle-free removal when needed.
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✅ 100% Verified Authorized OEM Grade Parts

CaPlugs 1" Red Polypropylene Tank Plug (T-12X) provides reliable sealing for RV fresh water and waste water systems. This professional-grade tapered plug ensures a secure, leak-proof seal while remaining easy to install and remove for maintenance.

Features & Specifications

Material: Premium polypropylene construction for superior durability
Size: 1" tapered design with 1.04" outer diameter
Temperature Range: 32°F to 140°F (-0°C to 60°C)
Chemical Resistance: Compatible with RV water systems and waste applications
Installation: Hand-tight seal - no tools required
Applications: RV tanks, MIL Spec fittings, hydraulic systems
Color: High-visibility red for easy identification
Standards: Meets NAS 834 specifications

Why Choose the CaPlugs T-12X?

Unlike generic plugs that crack or leak, this CaPlugs T-12X offers professional-grade reliability. The tapered design ensures a perfect seal every time, while the durable polypropylene material resists chemicals and temperature extremes common in RV applications.

RV Tank Plug Comparison

Product	Material	Price	Advantage
CaPlugs T-12X	Polypropylene	$1.79	OEM Grade Quality
Generic Rubber Plug	Basic Rubber	$2.99	Higher Cost
Metal Threaded Plug	Steel	$4.99	Corrosion Risk

Frequently Asked Questions

Q: Will this fit my RV fresh water tank?
A: Yes, the T-12X is designed for standard 1" RV tank openings and fits most fresh water and waste tanks.

Q: How do I install this plug?
A: Simply push the tapered end into the opening and twist to secure. Hand-tight is sufficient - no tools needed.

Q: Is this chemical resistant for waste tanks?
A: Yes, polypropylene material is compatible with RV waste systems and cleaning chemicals.

Q: What temperature range can this handle?
A: The T-12X performs reliably from 32°F to 140°F, covering all normal RV operating conditions.

Q: How long will this plug last?
A: With proper installation, expect 5+ years of reliable service in typical RV applications.

Q: Does this come with a warranty?
A: Yes, CaPlugs products include manufacturer warranty against defects. Contact our AI Live Chat for details.

Need help? Our AI Live Chat is available 24/7 for technical support and compatibility questions.

Material	Low-density polyethylene or Flex Temp (thermoplastic rubber)
Standard color	Red
Applicable specs	NAS 834
Dimension a (inches)	0.915
Dimension b (inches)	1.04
Dimension c (inches)	0.855
Dimension d (inches)	0.98
Dimension e (inches)	0.69
Dimension f (inches)	1.16
Service temperature ldpe (fahrenheit)	-94 to 175
Service temperature flex temp (fahrenheit)	0 to 300

Need Fittings Installed on This Tank?

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