Seals for oPVC & Pressure Lock Seals

WRM Pressure Lock Seals ISO/EN 1452 WRW Anger Grooves Competitor Benchmark (Van Ryn) Rubber Gaskets & DI Seals

High-Pressure oPVC Applications

WRM Pressure Lock Seal

The **WRM Pressure Lock Seal** is a locked-in type seal ideal for high-pressure oPVC applications. It stays securely locked in place for transport and assembly. The pressure lock seal uses the EN 1452 groove specification.

The seal is a combined lip & compression seal. The joint ring exceeds current standards for pressure, vacuum, deflection, and shear load. The WRM pressure lock seal design requires lower insertion pressures, making assembly easier and preventing sand ingression.

**Material:** EPDM
**Hardness:** $60^{\circ} / 70^{\circ}$ IRHD
**Approvals:** SANS 4633 / EN 681-1 / ISO 4633

**Potable Water:** Approved for cold water (WRAS & NSF)
**Ozone Resistance:** Excellent
**Testing:** SABS & rigorous in-house simulations

Pressure Lock Seal Dimensions (mm)

Size (mm)	OD A (min-max)	Width B (mm)
63	80.60 - 81.60	17.8 ± 0.8
75	94.50 - 97.10	19.9 ± 0.8
90	111.4 - 112.6	21.7 ± 0.8
110	133.5 - 134.7	23.6 ± 0.8
125	148.4 - 149.8	23.6 ± 0.8
140	165.9 - 167.6	25.3 ± 0.8
160	187.3 - 188.9	27.2 ± 0.9
200	229.1 - 231.1	29.0 ± 1.0
225	256.0 - 258.1	30.8 ± 1.2
250	284.5 - 286.9	34.2 ± 1.2
280	316.2 - 318.6	36.1 ± 1.2
315	353.5 - 356.5	37.6 ± 1.2
355	398.5 - 401.5	40.5 ± 1.2
400	445.9 - 449.7	44.9 ± 1.2
450	498.6 - 502.6	47.0 ± 1.4
500	554.0 - 558.6	51.4 ± 1.4
630	693.7 - 696.3	58.2 ± 1.5

ISO/EN 1452 - WRW Anger Groove Measurements

Exact groove dimensions and class recommendations for oPVC pipe socket manufacturing.

Dim (mm)	D	TOL D	d1	TOL d1	d2	TOL d2	R1	R2	R3	M	C (Min)
50	50.0	+0.2	50.4	+0.6	61.7	+0.6	4.5	9	16	26.3	14
63	63.0	+0.3	63.6	+0.7	80.0	+0.8	5.0	10	18	30.5	15
75	75.0	+0.3	75.6	+0.7	93.9	+0.8	5.5	11	20	35.5	16
90	90.0	+0.3	90.7	+0.8	110.7	+0.8	6.0	12	22	38.5	17
110	110.0	+0.4	110.8	+0.9	132.5	+0.9	6.5	14	25	43.0	18
125	125.0	+0.4	125.9	+1.0	147.4	+1.0	7.0	15	27	45.0	19
140	140.0	+0.5	140.9	+1.1	164.2	+1.0	7.0	16	29	47.0	20
160	160.0	+0.5	161.1	+1.1	186.0	+1.1	7.5	19	32	51.0	22
200	200.0	+0.6	201.2	+1.1	227.6	+1.2	8.0	22	37	56.0	24
250	250.0	+0.8	251.5	+1.1	282.6	+1.4	9.0	25	44	66.5	27
315	315.0	+1.0	316.8	+1.2	355.3	+1.6	10.5	33	54	77.5	30
355	355.0	+1.1	357.1	+1.2	394.7	+1.8	11.0	37	58	85.0	33
400	400.0	+1.2	402.2	+1.2	443.1	+2.0	11.5	39	65	88.0	36
450	450.0	+1.4	452.5	+1.3	495.4	+2.0	13.5	44	72	98.0	42
500	500.0	+1.4	502.6	+1.4	549.6	+2.0	14.5	51	81	110.5	48
630	630.0	+1.5	633.1	+1.5	688.8	+2.1	17.2	62	98	139.0	62

Competitive Intelligence & Benchmarking

WRM vs. Competitor (Van Ryn Rubber / VRR) oPVC Sealing Comparison

Analysing product specifications, manufacturing expertise, and market positioning between WRM and competitor Van Ryn Rubber (VRR).

Strategic Benchmarking

While competitor **Van Ryn Rubber (VRR)** offers standard pressure and pressure lock seals up to 500 mm (backed by ISO 4633 and SANS compliance), **Waheguru Rubber (WRM)** delivers an expanded 50-year engineering pedigree, a broader size range up to **630 mm** for oPVC networks, and comprehensive approvals across global certifying bodies (WRAS, NSF, UKAS, SANS, ISO 9001).

**Size Range:** WRM extends up to 630 mm for high-capacity oPVC pipelines.
**Global Certifications:** Dual WRAS & NSF International recognition alongside SANS 4633.
**Client Base:** Extensive tier-1 Indian industrial trust including Tata Steel, ONGC, and Indian Railways.

Why Municipal Engineers Choose WRM

**50 Years of Mastery:** Half a century exclusively dedicated to elastomer compounding and precision sealing.
**Zero Sand Ingression:** Refined rubber lip geometry prevents soil migration in aggressive trenching.
**Lower Insertion Forces:** Optimized durometer ($60^{\circ}/70^{\circ}$ IRHD) ensuring fast, fatigue-free site assembly.

Rubber Push-On Gaskets & Specialised Seals

Diversified industrial sealing products engineered for Ductile Iron, fibre glass, and flanged valves.

Rubber Push-On Gaskets

High-precision push-on gaskets preventing leakage in DI pipe joints. Manufactured in compliance with ISO 4633, BS EN 681-1, and WA/WC 50/80 standards.

Industrial Flanged Gaskets

Precision engineered range of industrial gaskets demanded across chemical processing, water treatment plants, and heavy engineering industries.

Fibre Glass Pipe Seals

Specialised sealing profiles for fibre glass and GRP piping networks complying with IS: 5382, BS EN 681-1, ISO 4633, and DIN: 4060 standards.