Nope. That's as big as they get. You can print them to a larger size but definition will suffer - originals are only 640x480 for the most part. That's the lowest definition setting on a 1.3mp digital camera. I keep them small to allow fast loading.
If you are concerned about the mating of the two part seal, don't be. It's shipped mated, so just note how it goes together and also take a look at the old one before pulling it off. All the other parts fit one way only. Make sure the two parts mate on the injector shank. They tend to separate when you slip the seal on - a bit of light oil helps.