Oakum - Oiled
oiled at bottom of pic

Details

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Oakum can be used between the logs to seal out the elements...and in traditional wooden boat building...and some plumbing with caste iron pipes...
Made of Natural Fibre Jute that is treated with Bentonite (a naturally occuring mineral often used in sealing ponds), and oil to resist water infiltration.
Use as is to fill larger gaps, or separate the strands for smaller areas.

This is an oiled product (Been told it's the equivalent of 7-800 wt and doesn't easily burn at lower temperatures...plumbers that are packing caste iron joints are pouring 1000 degree lead on it to create the seal). 

NOTE: To use as a backing material for chinking or caulking material, it's best to place a bond breaking tape over the surface so the caulking/chinking material is not in direct contact with the Oakum. We don't recommend the Oiled Oakum for use in a lateral where the pressure of the logs will squeeze the Oakum...this may push some of the oil out of the Oakum and down your logs.

NOTE: The 1 lb. package consisting of 3 strands of oiled oakum, each 27" in length, has long been used by plumbers in tradional caste iron waste pipes...it is packed in the pipe joint and sealed over with lead (or a lead like material?).

NOTE: Oakum is rarely visible when installed. However, for those working on unusual projects, some folks feel there is a bit of a deep dark green tint to the stuff...personally, I think this is whatever floor sweepings got put in the mix [sic].

Photos

Dry at top, Oiled at bottom

Extras

msda (pdf)