Last time I ordered 5 sets first class postage was 59 cents to Canada in a bubble pack envelope.
Now they want $19.00

for flat rate small box because they can't print first class postage online? Suggested I try local. None of the supply houses or hydraulic shops here carry metric o-rings. OEM o-rings in Canada are more than double U.S. pricing.
If anyone is ordering & would order an additional 5 sets & mail them to me it would be greatly appreciated. I would be more than happy to send you payment via Paypal to cover all costs.