JIS Neoprene O-Rings

OneMonroe offers high-quality neoprene O-rings that provide dependable sealing solutions for a broad range of applications. These O-rings are crafted from durable neoprene material, known for its excellent resistance to oils, greases, and many chemicals, as well as its superior durability in varying temperatures. With their outstanding physical properties, OneMonroe’s neoprene O-rings are ideally suited for use in automotive, aerospace, plumbing, and industrial applications, where effective sealing is essential for reliable performance and safety. No matter the application, OneMonroe neoprene O-rings are designed to withstand the demands of heavy use, ensuring long-lasting, leak-free performance in challenging environments.

Our neoprene O-rings are available in a range of sizes, including JIS (Japanese Industrial Standards) neoprene O-rings, to meet specific industry requirements. The JIS standard ensures consistent sizing and performance, making these O-rings an excellent choice for applications that demand precise, reliable sealing. OneMonroe understands the importance of having the right size and material to create a proper seal, which is why we offer a variety of options to suit the needs of different equipment and projects. Our O-rings are engineered for both static and dynamic applications, providing flexible, high-strength sealing solutions for everything from hydraulic systems to fuel handling.

When you choose OneMonroe neoprene O-rings, you’re investing in quality, performance, and peace of mind. We manufacture these O-rings to rigorous standards, ensuring they meet the high expectations of our customers. With exceptional resilience and chemical compatibility, OneMonroe neoprene O-rings offer a cost-effective sealing solution that enhances equipment efficiency and longevity. Rely on OneMonroe’s expertise and commitment to quality to deliver the reliable O-rings you need for critical applications in any industry.

For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.

Item #	IntegrationID	Type	Material	Cross Section Width	Durometer	Inside Diameter	CSW Tolerance	ID Tolerance	JIS Number
P35.5 C-70	N/A 179606	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 35.20 mm1.386 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-35.5
P355 C-70	N/A 179607	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.331 in8.40 mm	N/A 70	N/A 354.50 mm13.957 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-355
P36 C-70	N/A 179608	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 35.70 mm1.406 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-36
P360 C-70	N/A 179609	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.331 in8.40 mm	N/A 70	N/A 359.50 mm14.154 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-360
P375 C-70	N/A 179610	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.331 in8.40 mm	N/A 70	N/A 374.50 mm14.744 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-375
P38 C-70	N/A 179611	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 37.70 mm1.484 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-38
P385 C-70	N/A 179612	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.331 in8.40 mm	N/A 70	N/A 384.50 mm15.138 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-385
P39 C-70	N/A 179613	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 38.70 mm1.524 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-39
P4 C-70	N/A 179614	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.075 in1.90 mm	N/A 70	N/A 3.80 mm0.150 in	N/A 0.003 in0.09 mm	N/A 0.005 in0.12 mm	N/A P-4
P40 C-70	N/A 179615	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 39.70 mm1.563 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-40
P400 C-70	N/A 179616	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.331 in8.40 mm	N/A 70	N/A 399.5 mm15.728 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-400
P41 C-70	N/A 179617	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 40.70 mm1.602 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-41
P42 C-70	N/A 179618	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 41.70 mm1.642 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-42
P44 C-70	N/A 179619	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 43.70 mm1.720 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-44
P45 C-70	N/A 179620	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 44.70 mm1.760 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-45
P46 C-70	N/A 179621	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 45.70 mm1.799 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-46
P48 C-70	N/A 179622	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 47.70 mm1.878 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-48
P48A C-70	N/A 179623	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.224 in5.70 mm	N/A 70	N/A 47.60 mm1.874 in	N/A 0.006 in0.15 mm	N/A 0.01 in0.25 mm	N/A P-48A
P49 C-70	N/A 179624	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 48.70 mm1.917 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-49
P5 C-70	N/A 179625	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.075 in1.90 mm	N/A 70	N/A 4.80 mm0.189 in	N/A 0.003 in0.09 mm	N/A 0.005 in0.12 mm	N/A P-5
P50 C-70	N/A 179626	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.138 in3.50 mm	N/A 70	N/A 49.70 mm1.957 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-50
P50A C-70	N/A 179627	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.224 in5.70 mm	N/A 70	N/A 49.60 mm1.953 in	N/A 0.006 in0.15 mm	N/A 0.01 in0.25 mm	N/A P-50A
P52 C-70	N/A 179628	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.224 in5.70 mm	N/A 70	N/A 51.60 mm2.031 in	N/A 0.006 in0.15 mm	N/A 0.01 in0.25 mm	N/A P-52
P53 C-70	N/A 179629	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.224 in5.70 mm	N/A 70	N/A 52.6 mm2.071 in	N/A 0.006 in0.15 mm	N/A 0.01 in0.25 mm	N/A P-53
P55 C-70	N/A 179630	N/A JIS Standard O-Ring	N/A Neoprene	N/A 0.224 in5.70 mm	N/A 70	N/A 54.60 mm2.150 in	N/A 0.006 in0.15 mm	N/A 0.01 in0.25 mm	N/A P-55

N/A
179606

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 35.20 mm1.386 in

N/A 0.004 in0.10 mm

N/A 0.006 in0.15 mm

N/A P-35.5

P355 C-70

N/A
179607

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.331 in8.40 mm

N/A 70

N/A 354.50 mm13.957 in

N/A 0.006 in0.18 mm

N/A 0.039 in1.00 mm

N/A P-355

P36 C-70

N/A
179608

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 35.70 mm1.406 in

N/A 0.004 in0.10 mm

N/A 0.006 in0.15 mm

N/A P-36

P360 C-70

N/A
179609

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.331 in8.40 mm

N/A 70

N/A 359.50 mm14.154 in

N/A 0.006 in0.18 mm

N/A 0.039 in1.00 mm

N/A P-360

P375 C-70

N/A
179610

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.331 in8.40 mm

N/A 70

N/A 374.50 mm14.744 in

N/A 0.006 in0.18 mm

N/A 0.039 in1.00 mm

N/A P-375

P38 C-70

N/A
179611

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 37.70 mm1.484 in

N/A 0.004 in0.10 mm

N/A 0.006 in0.15 mm

N/A P-38

P385 C-70

N/A
179612

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.331 in8.40 mm

N/A 70

N/A 384.50 mm15.138 in

N/A 0.006 in0.18 mm

N/A 0.039 in1.00 mm

N/A P-385

P39 C-70

N/A
179613

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 38.70 mm1.524 in

N/A 0.004 in0.10 mm

N/A 0.006 in0.15 mm

N/A P-39

P4 C-70

N/A
179614

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.075 in1.90 mm

N/A 70

N/A 3.80 mm0.150 in

N/A 0.003 in0.09 mm

N/A 0.005 in0.12 mm

N/A P-4

P40 C-70

N/A
179615

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 39.70 mm1.563 in

N/A 0.004 in0.10 mm

N/A 0.006 in0.15 mm

N/A P-40

P400 C-70

N/A
179616

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.331 in8.40 mm

N/A 70

N/A 399.5 mm15.728 in

N/A 0.006 in0.18 mm

N/A 0.039 in1.00 mm

N/A P-400

P41 C-70

N/A
179617

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 40.70 mm1.602 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-41

P42 C-70

N/A
179618

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 41.70 mm1.642 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-42

P44 C-70

N/A
179619

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 43.70 mm1.720 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-44

P45 C-70

N/A
179620

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 44.70 mm1.760 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-45

P46 C-70

N/A
179621

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 45.70 mm1.799 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-46

P48 C-70

N/A
179622

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 47.70 mm1.878 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-48

P48A C-70

N/A
179623

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.224 in5.70 mm

N/A 70

N/A 47.60 mm1.874 in

N/A 0.006 in0.15 mm

N/A 0.01 in0.25 mm

N/A P-48A

P49 C-70

N/A
179624

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 48.70 mm1.917 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-49

P5 C-70

N/A
179625

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.075 in1.90 mm

N/A 70

N/A 4.80 mm0.189 in

N/A 0.003 in0.09 mm

N/A 0.005 in0.12 mm

N/A P-5

P50 C-70

N/A
179626

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.138 in3.50 mm

N/A 70

N/A 49.70 mm1.957 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-50

P50A C-70

N/A
179627

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.224 in5.70 mm

N/A 70

N/A 49.60 mm1.953 in

N/A 0.006 in0.15 mm

N/A 0.01 in0.25 mm

N/A P-50A

P52 C-70

N/A
179628

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.224 in5.70 mm

N/A 70

N/A 51.60 mm2.031 in

N/A 0.006 in0.15 mm

N/A 0.01 in0.25 mm

N/A P-52

P53 C-70

N/A
179629

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.224 in5.70 mm

N/A 70

N/A 52.6 mm2.071 in

N/A 0.006 in0.15 mm

N/A 0.01 in0.25 mm

N/A P-53

P55 C-70

N/A
179630

N/A JIS Standard O-Ring

N/A Neoprene

N/A 0.224 in5.70 mm

N/A 70

N/A 54.60 mm2.150 in

N/A 0.006 in0.15 mm

N/A 0.01 in0.25 mm

N/A P-55