Genuine Larsen NMO O-Ring; the ONMOMNT is a 3 pack of replacement O-rings. In order to protect your NMO antenna from moisture leaks the O-ring is an essential part of the base. When your O-ring becomes brittle and weathered it is time to replace it. Do not let a mechanical gasket failure degrade your antenna performance or allow water to leak in at the base of the NMO mount. Seal the wet stuff out with the ONMOMNT from Larsen Antennas.
- NMO mount waterproofing accessory
- ¾ inch diameter
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