N-Drain Sealing Rings to be used only for prevention of dirt ingress. Not suitable for sealed system.
Two seals are required per joint when using coupler.
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Naylor Drainage is consulted before specifying.
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| Uniclass (?) | Pr_65_52_63 Pipes and fittings | |