Fernco Strong-Back 5051-66RC 6" X 6" Ductile Iron to Cast Iron, Plastic or Steel Pipe Shielded RC Coupling Connector

5051 Series · Strong Back RC 5000 Series Shielded Coupling

Fernco Strong-Back 5051-66RC 6" X 6" Ductile Iron to Cast Iron, Plastic or Steel Pipe Shielded RC Coupling Connector

Part # 5051-66RC

Below-ground pipe connector excellence. Designed to resist heavy earth loads and shear forces, Fernco strong-back RC pipe couplings stand as the optimal...
The preferred pipe connector. Fernco couplings stand as the top choice for flexible pipe connections in waste, drain, and vent applications.
Unsurpassed durability. Provides a permanent, leak-proof solution for sewer, drain, waste, and vent piping needs, ensuring enduring...
American craftsmanship. With over 60 years of proud manufacturing in the USA, Fernco's products reflect unparalleled quality and...

5051 Series Size: 6" x 6"

Connects Ductile Iron to Cast Iron, Plastic and Steel

Drawing (PDF) All documents

Dimensions

Download drawing (PDF)

End 1 pipe OD range	6.53" to 7.00"
End 2 pipe OD range	6.23" to 6.70"
End 1 inside diameter	7.00"
End 2 inside diameter	6.70"
Length	9.82 in
Width	9.82 in
Height	6.00 in
Weight	6 lb

Product details

Introducing the Fernco strong-back 5051-66RC 6" x 6" strong-back RC shielded couplings with nut and bolt clamps, the ultimate solution for demanding pipe connections. Specifically designed to effortlessly connect 6" ductile iron to 6" cast iron, plastic or steel, this coupling accommodates pipe outer diameters ranging from 6.53"-7" on one end and 6.23"-6.7" on the other end, guaranteeing a flexible fit for various applications. Built to withstand challenging conditions, including slight off-set in host pipes, these shielded couplings offer unparalleled adaptability and resilience. Engineered for below-ground excellence, Fernco strong-back RC pipe couplings resist heavy earth loads and shear forces, ensuring secure connections that last.

Trusted by professionals worldwide, Fernco is the preferred choice for waste, drain, and vent applications. Plumbers, contractors, and municipalities rely on Fernco couplings for their unmatched performance and peace of mind. Fernco couplings deliver a permanent, leak-proof solution for sewer, drain, waste, and vent piping needs, meeting stringent requirements and standards with ease. Backed by industry-leading specs and codes compliance, including ASTM d 5926, c 1173 CSA B602, and UPC approval, Fernco couplings ensure reliability above and below ground. With a maximum test pressure of 4.3 PSI, these couplings are designed for waste, drain and vent applicaitons. Crafted with pride in the USA for over 60 years, Fernco's legacy of american craftsmanship shines through in every product.

Unrivaled resilience in challenging conditions. Fernco strong-back RC shielded couplings accommodate challenging pipe connections, including slight off-set in host pipes.

Flexible fit. Specifically designed to connect 6" ductile iron to 6" cast iron, plastic or steel. This coupling accommodates pipe outer diameters (ODs) ranging from 6.53"-7" on one end and 6.23"-6.7" on the other end.

Specs and codes. Complies with ASTM d 5926, c 1173, CSA b602 and are UPC approved. Best for below ground use. Maximum test pressure: 4.3 PSI.

Specifications

Product
Connection	Mechanical
Fitting type	Reducing Coupling
Flexible	Yes
Material	Elastomeric PVC, Stainless Steel
Color	Black, Silver
Standards	ASTM C1173, ASTM D5926, CSA B602, UPC
Application	Below Ground, DWV

Performance
Max test pressure	4.3 psi
Temperature range	-30°F to 140°F

Drawings and downloads

Documents

Dimensional drawing

5051-66RC, PDF · 108.18 KB

Download

Installation instructions All products

Compare 5051 Series sizes

Ductile Iron to Cast Iron, Plastic and Steel

5051-44RC

Size
4" x 4"

Pipe OD range
4.61" to 4.85" / 4.16" to 4.40"
5051-46RC

Size
4" x 6"

Pipe OD range
4.28" to 4.75" / 6.18" to 6.65"
5051-64RC

Size
6" x 4"

Pipe OD range
6.48" to 6.95" / 4.40" to 4.60"
5051-66RC (this part)

Size
6" x 6"

Pipe OD range
6.53" to 7.00" / 6.23" to 6.70"
5051-84RC

Size
8" x 4"

Pipe OD range
8.58" to 9.05" / 4.40" to 4.60"
5051-88RC

Size
8" x 8"

Pipe OD range
8.78" to 9.25" / 7.98" to 8.45"
5051-1010RC

Size
10" x 10"

Pipe OD range
10.28" to 10.75" / 10.03" to 10.50"
5051-1212RC

Size
12" x 12"

Pipe OD range
12.58" to 13.05" / 12.50" to 12.70"
5051-1215RC

Size
12" x 15"

Pipe OD range
13.10" to 13.30" / 14.93" to 15.40"

Part	Size	Pipe OD range (end 1 / end 2)
5051-44RC	4" x 4"	4.61" to 4.85" / 4.16" to 4.40"
5051-46RC	4" x 6"	4.28" to 4.75" / 6.18" to 6.65"
5051-64RC	6" x 4"	6.48" to 6.95" / 4.40" to 4.60"
5051-66RC (this part)	6" x 6"	6.53" to 7.00" / 6.23" to 6.70"
5051-84RC	8" x 4"	8.58" to 9.05" / 4.40" to 4.60"
5051-88RC	8" x 8"	8.78" to 9.25" / 7.98" to 8.45"
5051-1010RC	10" x 10"	10.28" to 10.75" / 10.03" to 10.50"
5051-1212RC	12" x 12"	12.58" to 13.05" / 12.50" to 12.70"
5051-1215RC	12" x 15"	13.10" to 13.30" / 14.93" to 15.40"