sika
good leads, lots of marine supply places seem to have a few varieties.
also:
these two are listed in Sika's 'find a distributor' section of their site.
K & D Pratt Limited
617 Windmill Road, P.O. Box 279
Dartmouth, NS B2Y 3Y3
Stright-MacKay Ltd.
209 Terra Cotta Drive, P.O. Box 97
New Glasgow, NS B2H 5E1
they also list Home Depot etc....but I've seen only a couple of construction varieties there, huge tubes and sacks of post set.
I don't know if there's an equivalent of BC Fasteners...seems most provinces have one, they carry a fair bit of Sika...I'll bet if you order a box of 12 tubes they'll order in whatever you want.
good luck!