Sealcon Metric Strain Relief Flex Cable Glands Comparison Chart

Metric Flex Cable Gland Comparison

Sealcon Metric Strain Relief Flex Cable Glands

Compare M12 to M25 flex-top cable glands by cable range, body material, thread size, dimensions, and design type. The flexible spring-style top helps limit sharp bends at enclosure entries, therefore reducing cable kinking, abrasion, and repeated-motion stress.

Sealcon metric flex cable gland dimensions and construction diagram
1. Match the cable OD
Choose a listed cable range that fully covers the measured outside diameter of the installed cable.
2. Select the thread size
Confirm the enclosure entry uses the same metric thread: M12, M16, M20 or M25.
3. Choose the design
Use standard threads for typical panels, elongated threads for thicker walls, or EMI/RFI versions for shield continuity.
4. Pick the body material
Nylon keeps weight and cost down. Nickel-plated brass adds durability and includes a stainless steel spring.

How are Sealcon metric flex fittings used?

These metric strain relief fittings secure cables where movement, vibration, or tight routing could otherwise concentrate stress at the enclosure wall. They are commonly installed on machine controls, robotics, motors, and pumps. The extended flexible top guides the cable through a smoother bend while the gland body grips and seals the entry. For shielded control or instrumentation cable, the EMI/RFI versions provide a metal construction intended for grounding and interference-control applications.

Sealcon Metric Strain Relief Flex Cable Gland Comparison Chart
Part Number Thread Type Cable Range Through Hole Diameter Body Length Thread Length Type Body
CF12DA-BK M12 .12" - .26" (3 - 6.5 mm) .47" (12 mm) 2.13" (54 mm) .59" (15 mm) Elongated Thread Black Nylon Plastic
CF12DA-BR M12 .12" - .26" (3 - 6.5 mm) .47" (12 mm) 2.17" (55 mm) .39" (10 mm) Elongated Thread Nickel Plated Brass w/ Stainless Steel Spring
CF12DA-GY M12 .12" - .26" (3 - 6.5 mm) .47" (12 mm) 2.13" (54 mm) .59" (15 mm) Elongated Thread Gray Nylon Plastic
CF12DR-BK M12 .08" - .20" (2 - 5 mm) .47" (12 mm) 2.13" (54 mm) .59" (15 mm) Elongated Thread Black Nylon Plastic
CF12DR-BR M12 .08" - .20" (2 - 5 mm) .47" (12 mm) 2.17" (55 mm) .39" (10 mm) Elongated Thread Nickel Plated Brass w/ Stainless Steel Spring
CF12DR-GY M12 .08" - .20" (2 - 5 mm) .47" (12 mm) 2.13" (54 mm) .59" (15 mm) Elongated Thread Gray Nylon Plastic
CF12MA-BE M12 .12" - .26" (3 - 6.5 mm) .47" (12 mm) 2.17" (55 mm) .26" (6.5 mm) EMI / RFI Proof Nickel Plated Brass w/ Stainless Steel Spring
CF12MA-BK M12 .12" - .26" (3 - 6.5 mm) .47" (12 mm) 2.13" (54 mm) .31" (8 mm) Standard Black Nylon Plastic
CF12MA-BR M12 .12" - .26" (3 - 6.5 mm) .47" (12 mm) 2.17" (55 mm) .26" (6.5 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring
CF12MA-GY M12 .12" - .26" (3 - 6.5 mm) .47" (12 mm) 2.13" (54 mm) .31" (8 mm) Standard Gray Nylon Plastic
CF12MR-BE M12 .08" - .20" (2 - 5 mm) .47" (12 mm) 2.17" (55 mm) .26" (6.5 mm) EMI / RFI Proof Nickel Plated Brass w/ Stainless Steel Spring
CF12MR-BK M12 .08" - .20" (2 - 5 mm) .47" (12 mm) 2.13" (54 mm) .31" (8 mm) Standard Black Nylon Plastic
CF12MR-BR M12 .08" - .20" (2 - 5 mm) .47" (12 mm) 2.17" (55 mm) .26" (6.5 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring
CF16DA-BK M16 .16" - .31" (4 - 8 mm) .63" (16 mm) 2.48" (63 mm) .59" (15 mm) Elongated Thread Black Nylon Plastic
CF16DA-BR M16 .16" - .31" (4 - 8 mm) .63" (16 mm) 2.60" (66 mm) .39" (10 mm) Elongated Thread Nickel Plated Brass w/ Stainless Steel Spring
CF16DA-GY M16 .16" - .31" (4 - 8 mm) .63" (16 mm) 2.48" (63 mm) .59" (15 mm) Elongated Thread Gray Nylon Plastic
CF16DR-BR M16 .08" - .24" (2 - 6 mm) .63" (16 mm) 2.60" (66 mm) .39" (10 mm) Elongated Thread Nickel Plated Brass w/ Stainless Steel Spring
CF16DR-GY M16 .08" - .24" (2 - 6 mm) .63" (16 mm) 2.48" (63 mm) .59" (15 mm) Elongated Thread Gray Nylon Plastic
CF16MA-BE M16 .20" - .39" (5 - 10 mm) .63" (16 mm) 3.03" (77 mm) .24" (6 mm) EMI / RFI Proof Nickel Plated Brass w/ Stainless Steel Spring
CF16MA-BK M16 .16" - .31" (4 - 8 mm) .63" (16 mm) 2.48" (63 mm) .31" (8 mm) Standard Black Nylon Plastic
CF16MA-BR M16 .16" - .31" (4 - 8 mm) .63" (16 mm) 2.6" (66 mm) .24" (6 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring
CF16MA-GY M16 .16" - .31" (4 - 8 mm) .63" (16 mm) 2.48" (63 mm) .31" (8 mm) Standard Gray Nylon Plastic
CF16MR-BE M16 .12" - .28" (3 - 7 mm) .63" (16 mm) 3.03" (77 mm) .24" (6 mm) EMI / RFI Proof Nickel Plated Brass w/ Stainless Steel Spring
CF16MR-BK M16 .08" - .24" (2 - 6 mm) .63" (16 mm) 2.48" (63 mm) .31" (8 mm) Standard Black Nylon Plastic
CF16MR-BR M16 .08" - .24" (2 - 6 mm) .63" (16 mm) 2.6" (66 mm) .24" (6 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring
CF16MR-GY M16 .08" - .24" (2 - 6 mm) .63" (16 mm) 2.48" (63 mm) .31" (8 mm) Standard Gray Nylon Plastic
CF17DA-BK M16 .20" - .39" (5 - 10 mm) .63" (16 mm) 3.07" (78 mm) .59" (15 mm) Elongated Thread Black Nylon Plastic
CF17DA-BR M16 .20" - .39" (5 - 10 mm) .63" (16 mm) 3.03" (77 mm) .39" (10 mm) Elongated Thread Nickel Plated Brass w/ Stainless Steel Spring
CF17DA-GY M16 .20" - .39" (5 - 10 mm) .63" (16 mm) 3.07" (78 mm) .59" (15 mm) Elongated Thread Gray Nylon Plastic
CF17DR-BK M16 .12" - .28" (3 - 7 mm) .63" (16 mm) 3.07" (78 mm) .59" (15 mm) Elongated Thread Black Nylon Plastic
CF17MA-BK M16 .20" - .39" (5 - 10 mm) .63" (16 mm) 3.07" (78 mm) .31" (8 mm) Standard Black Nylon Plastic
CF17MA-BR M16 .20" - .39" (5 - 10 mm) .63" (16 mm) 3.03" (77 mm) .24" (6 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring
CF17MA-GY M16 .20" - .39" (5 - 10 mm) .63" (16 mm) 3.07" (78 mm) .31" (8 mm) Standard Gray Nylon Plastic
CF17MR-BK M16 .12" - .28" (3 - 7 mm) .63" (16 mm) 3.07" (78 mm) .31" (8 mm) Standard Black Nylon Plastic
CF17MR-BR M16 .12" - .28" (3 - 7 mm) .63" (16 mm) 3.03" (77 mm) .24" (6 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring
CF17MR-GY M16 .12" - .28" (3 - 7 mm) .63" (16 mm) 3.07" (78 mm) .31" (8 mm) Standard Gray Nylon Plastic
CF20DA-BK M20 .24" - .47" (6 - 12 mm) .79" (20 mm) 3.54" (90 mm) .59" (15 mm) Elongated Thread Black Nylon Plastic
CF20DA-BR M20 .24" - .47" (6 - 12 mm) .79" (20 mm) 3.46" (88 mm) .39" (10 mm) Elongated Thread Nickel Plated Brass w/ Stainless Steel Spring
CF20DA-GY M20 .24" - .47" (6 - 12 mm) .79" (20 mm) 3.54" (90 mm) .59" (15 mm) Elongated Thread Gray Nylon Plastic
CF20DR-BK M20 .20" - .35" (5 - 9 mm) .79" (20 mm) 3.54" (90 mm) .59" (15 mm) Elongated Thread Black Nylon Plastic
CF20DR-BR M20 .20" - .35" (5 - 9 mm) .79" (20 mm) 3.46" (88 mm) .39" (10 mm) Elongated Thread Nickel Plated Brass w/ Stainless Steel Spring
CF20MA-BE M20 .39" - .55" (10 - 14 mm) .79" (20 mm) 3.86" (98 mm) .24" (6 mm) EMI / RFI Proof Nickel Plated Brass w/ Stainless Steel Spring
CF20MA-BK M20 .24" - .47" (6 - 12 mm) .79" (20 mm) 3.54" (90 mm) .35" (9 mm) Standard Black Nylon Plastic
CF20MA-BR M20 .24" - .47" (6 - 12 mm) .79" (20 mm) 3.46" (88 mm) .24" (6 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring
CF20MA-GY M20 .24" - .47" (6 - 12 mm) .79" (20 mm) 3.54" (90 mm) .35" (9 mm) Standard Gray Nylon Plastic
CF20MR-BE M20 .28" - .47" (7 - 12 mm) .79" (20 mm) 3.86" (98 mm) .24" (6 mm) EMI / RFI Proof Nickel Plated Brass w/ Stainless Steel Spring
CF20MR-BK M20 .20" - .35" (5 - 9 mm) .79" (20 mm) 3.54" (90 mm) .35" (9 mm) Standard Black Nylon Plastic
CF20MR-BR M20 .20" - .35" (5 - 9 mm) .79" (20 mm) 3.46" (88 mm) .24" (6 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring
CF20MR-GY M20 .20" - .35" (5 - 9 mm) .79" (20 mm) 3.54" (90 mm) .35" (9 mm) Standard Gray Nylon Plastic
CF22DA-BK M20 .39" - .55" (10 - 14 mm) .79" (20 mm) 3.94" (100 mm) .59" (15 mm) Elongated Thread Black Nylon Plastic
CF22DA-BR M20 .39" - .55" (10 - 14 mm) .79" (20 mm) 3.86" (98 mm) .39" (10 mm) Elongated Thread Nickel Plated Brass w/ Stainless Steel Spring
CF22DR-BR M20 .28" - .47" (7 - 12 mm) .79" (20 mm) 3.86" (98 mm) .39" (10 mm) Elongated Thread Nickel Plated Brass w/ Stainless Steel Spring
CF22MA-BK M20 .39" - .55" (10 - 14 mm) .79" (20 mm) 3.94" (100 mm) .35" (9 mm) Standard Black Nylon Plastic
CF22MA-BR M20 .39" - .55" (10 - 14 mm) .79" (20 mm) 3.86" (98 mm) .24" (6 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring
CF22MR-BK M20 .28" - .47" (7 - 12 mm) .79" (20 mm) 3.94" (100 mm) .35" (9 mm) Standard Black Nylon Plastic
CF22MR-BR M20 .27" - .47" (7 - 12 mm) .79" (20 mm) 3.86" (98 mm) .24" (6 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring
CF22MR-GY M20 .28" - .47" (7 - 12 mm) .79" (20 mm) 3.94" (100 mm) .35" (9 mm) Standard Gray Nylon Plastic
CF25DA-BK M25 .51" - .71" (13 - 18 mm) .98" (25 mm) 4.49" (114 mm) .59" (15 mm) Elongated Thread Black Nylon Plastic
CF25DA-BR M25 .51" - .71" (13 - 18 mm) .98" (25 mm) 4.37" (111 mm) .47" (12 mm) Elongated Thread Nickel Plated Brass w/ Stainless Steel Spring
CF25DA-GY M25 .51" - .71" (13 - 18 mm) .98" (25 mm) 4.49" (114 mm) .59" (15 mm) Elongated Thread Gray Nylon Plastic
CF25DR-BK M25 .35" - .63" (9 - 16 mm) .98" (25 mm) 4.49" (114 mm) .59" (15 mm) Elongated Thread Black Nylon Plastic
CF25DR-BR M25 .35" - .63" (9 - 16 mm) .98" (25 mm) 4.37" (111 mm) .47" (12 mm) Elongated Thread Nickel Plated Brass w/ Stainless Steel Spring
CF25DR-GY M25 .35" - .63" (9 - 16 mm) .98" (25 mm) 4.49" (114 mm) .59" (15 mm) Elongated Thread Gray Nylon Plastic
CF25MA-BE M25 .51" - .71" (13 - 18 mm) .98" (25 mm) 4.37" (111 mm) .28" (7 mm) EMI / RFI Proof Nickel Plated Brass w/ Stainless Steel Spring
CF25MA-BK M25 .53" - .71" (13 - 18 mm) .98" (25 mm) 4.49" (114 mm) .43" (11 mm) Standard Black Nylon Plastic
CF25MA-BR M25 .51" - .71" (13 - 18 mm) .98" (25 mm) 4.37" (111 mm) .27" (7 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring
CF25MR-BE M25 .35" - .63" (9 - 16 mm) .98" (25 mm) 4.37" (111 mm) .28" (7 mm) EMI / RFI Proof Nickel Plated Brass w/ Stainless Steel Spring
CF25MR-BK M25 .35" - .63" (9 - 16 mm) .98" (25 mm) 4.49" (114 mm) .43" (11 mm) Standard Black Nylon Plastic
CF25MR-BR M25 .35" - .63" (9 - 16 mm) .98" (25 mm) 4.37" (111 mm) .27" (7 mm) Standard Nickel Plated Brass w/ Stainless Steel Spring

Standard vs. elongated threads

Standard versions suit common enclosure-wall thicknesses. Elongated-thread models provide additional engagement where the fitting must pass through thicker panels or layered mounting surfaces.

Nylon vs. nickel-plated brass

Black or gray nylon is a practical choice for general machinery and control cabinets. Black nylon is also UV-resistant for outdoor use. Nickel-plated brass is better suited to installations that prioritize mechanical strength.

Cable range matters most

Do not select a gland by thread size alone. Verify the actual outside cable diameter falls inside the listed size range so the fitting can grip the jacket correctly.

Sealcon Metric Flex Fitting Selection Tip

Start with the cable outside diameter, then confirm the metric entry thread and required panel engagement. Use the comparison chart to narrow the options by design and material before opening the linked product page for final ordering details.