leakproof

For faster results, place it in a leakproof bag and immerse it in water, changing the water every 30 minutes or so.

Despite tough winter, food group says March is the time to freeze 2011

And most leakproof of all is the man who is actually making the decision.

Obama’s VP: The Candidate Drops Some Hints - Swampland - TIME.com 2008

Flat for perfect food presentation, leakproof and microwaveable.

Bento #162 « Were rabbits 2008

"I don't think this is leakproof," he said somberly.

...And Nail 2010

One reason for the feverish running-mate speculation is that those who actually know anything are a small, leakproof circle.

Obama’s VP: The Candidate Drops Some Hints - Swampland - TIME.com 2008

So far the Obama campaign has been leakproof, and to all appearances was not inclined to do business this way.

Election Central Morning Roundup 2009

In many geologic regions, the deeper gas-bearing layers are under extraordinary pressure from the weight of earth and water above, but that pressure normally is contained by thousands of feet of leakproof rock that separate the gas from the surface.

Officials in Three States Pin Water Woes on Gas Drilling ProPublica 2009

Get a leakproof bucket or canister that's not too ugly and keep it on the counter or under the sink, ready to fill with vegetable scraps.

Jane S. Smith: No Impact Week: Stop Stalling, Start Composting 2009

"Now, about this wall, Genie, is it well-made and leakproof?"

Who Destroyed Post-9/11 Unity? The GOP, That's Who 2009

The women of “Hillaryland” have constructed a carefully managed, always on-message, leakproof campaign.

Karl Rove-Hillary Smackdown Keeps On Smacking 2009